howto/coordinate-embargoed-releases.html

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
   3     "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
   4 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
   5 <head>
   6 <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
   7 <meta name="generator" content="AsciiDoc 10.2.0" />
   8 <title></title>
   9 <style type="text/css">
  10 /* Shared CSS for AsciiDoc xhtml11 and html5 backends */
  11
  12 /* Default font. */
  13 body {
  14   font-family: Georgia,serif;
  15 }
  16
  17 /* Title font. */
  18 h1, h2, h3, h4, h5, h6,
  19 div.title, caption.title,
  20 thead, p.table.header,
  21 #toctitle,
  22 #author, #revnumber, #revdate, #revremark,
  23 #footer {
  24   font-family: Arial,Helvetica,sans-serif;
  25 }
  26
  27 body {
  28   margin: 1em 5% 1em 5%;
  29 }
  30
  31 a {
  32   color: blue;
  33   text-decoration: underline;
  34 }
  35 a:visited {
  36   color: fuchsia;
  37 }
  38
  39 em {
  40   font-style: italic;
  41   color: navy;
  42 }
  43
  44 strong {
  45   font-weight: bold;
  46   color: #083194;
  47 }
  48
  49 h1, h2, h3, h4, h5, h6 {
  50   color: #527bbd;
  51   margin-top: 1.2em;
  52   margin-bottom: 0.5em;
  53   line-height: 1.3;
  54 }
  55
  56 h1, h2, h3 {
  57   border-bottom: 2px solid silver;
  58 }
  59 h2 {
  60   padding-top: 0.5em;
  61 }
  62 h3 {
  63   float: left;
  64 }
  65 h3 + * {
  66   clear: left;
  67 }
  68 h5 {
  69   font-size: 1.0em;
  70 }
  71
  72 div.sectionbody {
  73   margin-left: 0;
  74 }
  75
  76 hr {
  77   border: 1px solid silver;
  78 }
  79
  80 p {
  81   margin-top: 0.5em;
  82   margin-bottom: 0.5em;
  83 }
  84
  85 ul, ol, li > p {
  86   margin-top: 0;
  87 }
  88 ul > li     { color: #aaa; }
  89 ul > li > * { color: black; }
  90
  91 .monospaced, code, pre {
  92   font-family: "Courier New", Courier, monospace;
  93   font-size: inherit;
  94   color: navy;
  95   padding: 0;
  96   margin: 0;
  97 }
  98 pre {
  99   white-space: pre-wrap;
 100 }
 101
 102 #author {
 103   color: #527bbd;
 104   font-weight: bold;
 105   font-size: 1.1em;
 106 }
 107 #email {
 108 }
 109 #revnumber, #revdate, #revremark {
 110 }
 111
 112 #footer {
 113   font-size: small;
 114   border-top: 2px solid silver;
 115   padding-top: 0.5em;
 116   margin-top: 4.0em;
 117 }
 118 #footer-text {
 119   float: left;
 120   padding-bottom: 0.5em;
 121 }
 122 #footer-badges {
 123   float: right;
 124   padding-bottom: 0.5em;
 125 }
 126
 127 #preamble {
 128   margin-top: 1.5em;
 129   margin-bottom: 1.5em;
 130 }
 131 div.imageblock, div.exampleblock, div.verseblock,
 132 div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
 133 div.admonitionblock {
 134   margin-top: 1.0em;
 135   margin-bottom: 1.5em;
 136 }
 137 div.admonitionblock {
 138   margin-top: 2.0em;
 139   margin-bottom: 2.0em;
 140   margin-right: 10%;
 141   color: #606060;
 142 }
 143
 144 div.content { /* Block element content. */
 145   padding: 0;
 146 }
 147
 148 /* Block element titles. */
 149 div.title, caption.title {
 150   color: #527bbd;
 151   font-weight: bold;
 152   text-align: left;
 153   margin-top: 1.0em;
 154   margin-bottom: 0.5em;
 155 }
 156 div.title + * {
 157   margin-top: 0;
 158 }
 159
 160 td div.title:first-child {
 161   margin-top: 0.0em;
 162 }
 163 div.content div.title:first-child {
 164   margin-top: 0.0em;
 165 }
 166 div.content + div.title {
 167   margin-top: 0.0em;
 168 }
 169
 170 div.sidebarblock > div.content {
 171   background: #ffffee;
 172   border: 1px solid #dddddd;
 173   border-left: 4px solid #f0f0f0;
 174   padding: 0.5em;
 175 }
 176
 177 div.listingblock > div.content {
 178   border: 1px solid #dddddd;
 179   border-left: 5px solid #f0f0f0;
 180   background: #f8f8f8;
 181   padding: 0.5em;
 182 }
 183
 184 div.quoteblock, div.verseblock {
 185   padding-left: 1.0em;
 186   margin-left: 1.0em;
 187   margin-right: 10%;
 188   border-left: 5px solid #f0f0f0;
 189   color: #888;
 190 }
 191
 192 div.quoteblock > div.attribution {
 193   padding-top: 0.5em;
 194   text-align: right;
 195 }
 196
 197 div.verseblock > pre.content {
 198   font-family: inherit;
 199   font-size: inherit;
 200 }
 201 div.verseblock > div.attribution {
 202   padding-top: 0.75em;
 203   text-align: left;
 204 }
 205 /* DEPRECATED: Pre version 8.2.7 verse style literal block. */
 206 div.verseblock + div.attribution {
 207   text-align: left;
 208 }
 209
 210 div.admonitionblock .icon {
 211   vertical-align: top;
 212   font-size: 1.1em;
 213   font-weight: bold;
 214   text-decoration: underline;
 215   color: #527bbd;
 216   padding-right: 0.5em;
 217 }
 218 div.admonitionblock td.content {
 219   padding-left: 0.5em;
 220   border-left: 3px solid #dddddd;
 221 }
 222
 223 div.exampleblock > div.content {
 224   border-left: 3px solid #dddddd;
 225   padding-left: 0.5em;
 226 }
 227
 228 div.imageblock div.content { padding-left: 0; }
 229 span.image img { border-style: none; vertical-align: text-bottom; }
 230 a.image:visited { color: white; }
 231
 232 dl {
 233   margin-top: 0.8em;
 234   margin-bottom: 0.8em;
 235 }
 236 dt {
 237   margin-top: 0.5em;
 238   margin-bottom: 0;
 239   font-style: normal;
 240   color: navy;
 241 }
 242 dd > *:first-child {
 243   margin-top: 0.1em;
 244 }
 245
 246 ul, ol {
 247     list-style-position: outside;
 248 }
 249 ol.arabic {
 250   list-style-type: decimal;
 251 }
 252 ol.loweralpha {
 253   list-style-type: lower-alpha;
 254 }
 255 ol.upperalpha {
 256   list-style-type: upper-alpha;
 257 }
 258 ol.lowerroman {
 259   list-style-type: lower-roman;
 260 }
 261 ol.upperroman {
 262   list-style-type: upper-roman;
 263 }
 264
 265 div.compact ul, div.compact ol,
 266 div.compact p, div.compact p,
 267 div.compact div, div.compact div {
 268   margin-top: 0.1em;
 269   margin-bottom: 0.1em;
 270 }
 271
 272 tfoot {
 273   font-weight: bold;
 274 }
 275 td > div.verse {
 276   white-space: pre;
 277 }
 278
 279 div.hdlist {
 280   margin-top: 0.8em;
 281   margin-bottom: 0.8em;
 282 }
 283 div.hdlist tr {
 284   padding-bottom: 15px;
 285 }
 286 dt.hdlist1.strong, td.hdlist1.strong {
 287   font-weight: bold;
 288 }
 289 td.hdlist1 {
 290   vertical-align: top;
 291   font-style: normal;
 292   padding-right: 0.8em;
 293   color: navy;
 294 }
 295 td.hdlist2 {
 296   vertical-align: top;
 297 }
 298 div.hdlist.compact tr {
 299   margin: 0;
 300   padding-bottom: 0;
 301 }
 302
 303 .comment {
 304   background: yellow;
 305 }
 306
 307 .footnote, .footnoteref {
 308   font-size: 0.8em;
 309 }
 310
 311 span.footnote, span.footnoteref {
 312   vertical-align: super;
 313 }
 314
 315 #footnotes {
 316   margin: 20px 0 20px 0;
 317   padding: 7px 0 0 0;
 318 }
 319
 320 #footnotes div.footnote {
 321   margin: 0 0 5px 0;
 322 }
 323
 324 #footnotes hr {
 325   border: none;
 326   border-top: 1px solid silver;
 327   height: 1px;
 328   text-align: left;
 329   margin-left: 0;
 330   width: 20%;
 331   min-width: 100px;
 332 }
 333
 334 div.colist td {
 335   padding-right: 0.5em;
 336   padding-bottom: 0.3em;
 337   vertical-align: top;
 338 }
 339 div.colist td img {
 340   margin-top: 0.3em;
 341 }
 342
 343 @media print {
 344   #footer-badges { display: none; }
 345 }
 346
 347 #toc {
 348   margin-bottom: 2.5em;
 349 }
 350
 351 #toctitle {
 352   color: #527bbd;
 353   font-size: 1.1em;
 354   font-weight: bold;
 355   margin-top: 1.0em;
 356   margin-bottom: 0.1em;
 357 }
 358
 359 div.toclevel0, div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
 360   margin-top: 0;
 361   margin-bottom: 0;
 362 }
 363 div.toclevel2 {
 364   margin-left: 2em;
 365   font-size: 0.9em;
 366 }
 367 div.toclevel3 {
 368   margin-left: 4em;
 369   font-size: 0.9em;
 370 }
 371 div.toclevel4 {
 372   margin-left: 6em;
 373   font-size: 0.9em;
 374 }
 375
 376 span.aqua { color: aqua; }
 377 span.black { color: black; }
 378 span.blue { color: blue; }
 379 span.fuchsia { color: fuchsia; }
 380 span.gray { color: gray; }
 381 span.green { color: green; }
 382 span.lime { color: lime; }
 383 span.maroon { color: maroon; }
 384 span.navy { color: navy; }
 385 span.olive { color: olive; }
 386 span.purple { color: purple; }
 387 span.red { color: red; }
 388 span.silver { color: silver; }
 389 span.teal { color: teal; }
 390 span.white { color: white; }
 391 span.yellow { color: yellow; }
 392
 393 span.aqua-background { background: aqua; }
 394 span.black-background { background: black; }
 395 span.blue-background { background: blue; }
 396 span.fuchsia-background { background: fuchsia; }
 397 span.gray-background { background: gray; }
 398 span.green-background { background: green; }
 399 span.lime-background { background: lime; }
 400 span.maroon-background { background: maroon; }
 401 span.navy-background { background: navy; }
 402 span.olive-background { background: olive; }
 403 span.purple-background { background: purple; }
 404 span.red-background { background: red; }
 405 span.silver-background { background: silver; }
 406 span.teal-background { background: teal; }
 407 span.white-background { background: white; }
 408 span.yellow-background { background: yellow; }
 409
 410 span.big { font-size: 2em; }
 411 span.small { font-size: 0.6em; }
 412
 413 span.underline { text-decoration: underline; }
 414 span.overline { text-decoration: overline; }
 415 span.line-through { text-decoration: line-through; }
 416
 417 div.unbreakable { page-break-inside: avoid; }
 418
 419
 420 /*
 421  * xhtml11 specific
 422  *
 423  * */
 424
 425 div.tableblock {
 426   margin-top: 1.0em;
 427   margin-bottom: 1.5em;
 428 }
 429 div.tableblock > table {
 430   border: 3px solid #527bbd;
 431 }
 432 thead, p.table.header {
 433   font-weight: bold;
 434   color: #527bbd;
 435 }
 436 p.table {
 437   margin-top: 0;
 438 }
 439 /* Because the table frame attribute is overridden by CSS in most browsers. */
 440 div.tableblock > table[frame="void"] {
 441   border-style: none;
 442 }
 443 div.tableblock > table[frame="hsides"] {
 444   border-left-style: none;
 445   border-right-style: none;
 446 }
 447 div.tableblock > table[frame="vsides"] {
 448   border-top-style: none;
 449   border-bottom-style: none;
 450 }
 451
 452
 453 /*
 454  * html5 specific
 455  *
 456  * */
 457
 458 table.tableblock {
 459   margin-top: 1.0em;
 460   margin-bottom: 1.5em;
 461 }
 462 thead, p.tableblock.header {
 463   font-weight: bold;
 464   color: #527bbd;
 465 }
 466 p.tableblock {
 467   margin-top: 0;
 468 }
 469 table.tableblock {
 470   border-width: 3px;
 471   border-spacing: 0px;
 472   border-style: solid;
 473   border-color: #527bbd;
 474   border-collapse: collapse;
 475 }
 476 th.tableblock, td.tableblock {
 477   border-width: 1px;
 478   padding: 4px;
 479   border-style: solid;
 480   border-color: #527bbd;
 481 }
 482
 483 table.tableblock.frame-topbot {
 484   border-left-style: hidden;
 485   border-right-style: hidden;
 486 }
 487 table.tableblock.frame-sides {
 488   border-top-style: hidden;
 489   border-bottom-style: hidden;
 490 }
 491 table.tableblock.frame-none {
 492   border-style: hidden;
 493 }
 494
 495 th.tableblock.halign-left, td.tableblock.halign-left {
 496   text-align: left;
 497 }
 498 th.tableblock.halign-center, td.tableblock.halign-center {
 499   text-align: center;
 500 }
 501 th.tableblock.halign-right, td.tableblock.halign-right {
 502   text-align: right;
 503 }
 504
 505 th.tableblock.valign-top, td.tableblock.valign-top {
 506   vertical-align: top;
 507 }
 508 th.tableblock.valign-middle, td.tableblock.valign-middle {
 509   vertical-align: middle;
 510 }
 511 th.tableblock.valign-bottom, td.tableblock.valign-bottom {
 512   vertical-align: bottom;
 513 }
 514
 515
 516 /*
 517  * manpage specific
 518  *
 519  * */
 520
 521 body.manpage h1 {
 522   padding-top: 0.5em;
 523   padding-bottom: 0.5em;
 524   border-top: 2px solid silver;
 525   border-bottom: 2px solid silver;
 526 }
 527 body.manpage h2 {
 528   border-style: none;
 529 }
 530 body.manpage div.sectionbody {
 531   margin-left: 3em;
 532 }
 533
 534 @media print {
 535   body.manpage div#toc { display: none; }
 536 }
 537
 538
 539 </style>
 540 <script type="text/javascript">
 541 /*<![CDATA[*/
 542 var asciidoc = {  // Namespace.
 543
 544 /////////////////////////////////////////////////////////////////////
 545 // Table Of Contents generator
 546 /////////////////////////////////////////////////////////////////////
 547
 548 /* Author: Mihai Bazon, September 2002
 549  * http://students.infoiasi.ro/~mishoo
 550  *
 551  * Table Of Content generator
 552  * Version: 0.4
 553  *
 554  * Feel free to use this script under the terms of the GNU General Public
 555  * License, as long as you do not remove or alter this notice.
 556  */
 557
 558  /* modified by Troy D. Hanson, September 2006. License: GPL */
 559  /* modified by Stuart Rackham, 2006, 2009. License: GPL */
 560
 561 // toclevels = 1..4.
 562 toc: function (toclevels) {
 563
 564   function getText(el) {
 565     var text = "";
 566     for (var i = el.firstChild; i != null; i = i.nextSibling) {
 567       if (i.nodeType == 3 /* Node.TEXT_NODE */) // IE doesn't speak constants.
 568         text += i.data;
 569       else if (i.firstChild != null)
 570         text += getText(i);
 571     }
 572     return text;
 573   }
 574
 575   function TocEntry(el, text, toclevel) {
 576     this.element = el;
 577     this.text = text;
 578     this.toclevel = toclevel;
 579   }
 580
 581   function tocEntries(el, toclevels) {
 582     var result = new Array;
 583     var re = new RegExp('[hH]([1-'+(toclevels+1)+'])');
 584     // Function that scans the DOM tree for header elements (the DOM2
 585     // nodeIterator API would be a better technique but not supported by all
 586     // browsers).
 587     var iterate = function (el) {
 588       for (var i = el.firstChild; i != null; i = i.nextSibling) {
 589         if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
 590           var mo = re.exec(i.tagName);
 591           if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") {
 592             result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
 593           }
 594           iterate(i);
 595         }
 596       }
 597     }
 598     iterate(el);
 599     return result;
 600   }
 601
 602   var toc = document.getElementById("toc");
 603   if (!toc) {
 604     return;
 605   }
 606
 607   // Delete existing TOC entries in case we're reloading the TOC.
 608   var tocEntriesToRemove = [];
 609   var i;
 610   for (i = 0; i < toc.childNodes.length; i++) {
 611     var entry = toc.childNodes[i];
 612     if (entry.nodeName.toLowerCase() == 'div'
 613      && entry.getAttribute("class")
 614      && entry.getAttribute("class").match(/^toclevel/))
 615       tocEntriesToRemove.push(entry);
 616   }
 617   for (i = 0; i < tocEntriesToRemove.length; i++) {
 618     toc.removeChild(tocEntriesToRemove[i]);
 619   }
 620
 621   // Rebuild TOC entries.
 622   var entries = tocEntries(document.getElementById("content"), toclevels);
 623   for (var i = 0; i < entries.length; ++i) {
 624     var entry = entries[i];
 625     if (entry.element.id == "")
 626       entry.element.id = "_toc_" + i;
 627     var a = document.createElement("a");
 628     a.href = "#" + entry.element.id;
 629     a.appendChild(document.createTextNode(entry.text));
 630     var div = document.createElement("div");
 631     div.appendChild(a);
 632     div.className = "toclevel" + entry.toclevel;
 633     toc.appendChild(div);
 634   }
 635   if (entries.length == 0)
 636     toc.parentNode.removeChild(toc);
 637 },
 638
 639
 640 /////////////////////////////////////////////////////////////////////
 641 // Footnotes generator
 642 /////////////////////////////////////////////////////////////////////
 643
 644 /* Based on footnote generation code from:
 645  * http://www.brandspankingnew.net/archive/2005/07/format_footnote.html
 646  */
 647
 648 footnotes: function () {
 649   // Delete existing footnote entries in case we're reloading the footnodes.
 650   var i;
 651   var noteholder = document.getElementById("footnotes");
 652   if (!noteholder) {
 653     return;
 654   }
 655   var entriesToRemove = [];
 656   for (i = 0; i < noteholder.childNodes.length; i++) {
 657     var entry = noteholder.childNodes[i];
 658     if (entry.nodeName.toLowerCase() == 'div' && entry.getAttribute("class") == "footnote")
 659       entriesToRemove.push(entry);
 660   }
 661   for (i = 0; i < entriesToRemove.length; i++) {
 662     noteholder.removeChild(entriesToRemove[i]);
 663   }
 664
 665   // Rebuild footnote entries.
 666   var cont = document.getElementById("content");
 667   var spans = cont.getElementsByTagName("span");
 668   var refs = {};
 669   var n = 0;
 670   for (i=0; i<spans.length; i++) {
 671     if (spans[i].className == "footnote") {
 672       n++;
 673       var note = spans[i].getAttribute("data-note");
 674       if (!note) {
 675         // Use [\s\S] in place of . so multi-line matches work.
 676         // Because JavaScript has no s (dotall) regex flag.
 677         note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1];
 678         spans[i].innerHTML =
 679           "[<a id='_footnoteref_" + n + "' href='#_footnote_" + n +
 680           "' title='View footnote' class='footnote'>" + n + "</a>]";
 681         spans[i].setAttribute("data-note", note);
 682       }
 683       noteholder.innerHTML +=
 684         "<div class='footnote' id='_footnote_" + n + "'>" +
 685         "<a href='#_footnoteref_" + n + "' title='Return to text'>" +
 686         n + "</a>. " + note + "</div>";
 687       var id =spans[i].getAttribute("id");
 688       if (id != null) refs["#"+id] = n;
 689     }
 690   }
 691   if (n == 0)
 692     noteholder.parentNode.removeChild(noteholder);
 693   else {
 694     // Process footnoterefs.
 695     for (i=0; i<spans.length; i++) {
 696       if (spans[i].className == "footnoteref") {
 697         var href = spans[i].getElementsByTagName("a")[0].getAttribute("href");
 698         href = href.match(/#.*/)[0];  // Because IE return full URL.
 699         n = refs[href];
 700         spans[i].innerHTML =
 701           "[<a href='#_footnote_" + n +
 702           "' title='View footnote' class='footnote'>" + n + "</a>]";
 703       }
 704     }
 705   }
 706 },
 707
 708 install: function(toclevels) {
 709   var timerId;
 710
 711   function reinstall() {
 712     asciidoc.footnotes();
 713     if (toclevels) {
 714       asciidoc.toc(toclevels);
 715     }
 716   }
 717
 718   function reinstallAndRemoveTimer() {
 719     clearInterval(timerId);
 720     reinstall();
 721   }
 722
 723   timerId = setInterval(reinstall, 500);
 724   if (document.addEventListener)
 725     document.addEventListener("DOMContentLoaded", reinstallAndRemoveTimer, false);
 726   else
 727     window.onload = reinstallAndRemoveTimer;
 728 }
 729
 730 }
 731 asciidoc.install();
 732 /*]]>*/
 733 </script>
 734 </head>
 735 <body class="article">
 736 <div id="header">
 737 </div>
 738 <div id="content">
 739 <div class="sect1">
 740 <h2 id="_how_we_coordinate_embargoed_releases">How we coordinate embargoed releases</h2>
 741 <div class="sectionbody">
 742 <div class="paragraph"><p>To protect Git users from critical vulnerabilities, we do not just release
 743 fixed versions like regular maintenance releases. Instead, we coordinate
 744 releases with packagers, keeping the fixes under an embargo until the release
 745 date. That way, users will have a chance to upgrade on that date, no matter
 746 what Operating System or distribution they run.</p></div>
 747 </div>
 748 </div>
 749 <div class="sect1">
 750 <h2 id="_the_code_git_security_code_mailing_list">The <code>git-security</code> mailing list</h2>
 751 <div class="sectionbody">
 752 <div class="paragraph"><p>Responsible disclosures of vulnerabilities, analysis, proposed fixes as
 753 well as the orchestration of coordinated embargoed releases all happen on the
 754 <code>git-security</code> mailing list at &lt;<a href="mailto:git-security@googlegroups.com">git-security@googlegroups.com</a>&gt;.</p></div>
 755 <div class="paragraph"><p>In this context, the term "embargo" refers to the time period that information
 756 about a vulnerability is kept under wraps and only shared on a need-to-know
 757 basis. This is necessary to protect Git&#8217;s users from bad actors who would
 758 otherwise be made aware of attack vectors that could be exploited. "Lifting the
 759 embargo" refers to publishing the version that fixes the vulnerabilities.</p></div>
 760 <div class="sect2">
 761 <h3 id="_audience_of_the_code_git_security_code_mailing_list">Audience of the <code>git-security</code> mailing list</h3>
 762 <div class="paragraph"><p>Anybody may contact the <code>git-security</code> mailing list by sending an email
 763 to &lt;<a href="mailto:git-security@googlegroups.com">git-security@googlegroups.com</a>&gt;, though the archive is closed to the
 764 public and only accessible to subscribed members.</p></div>
 765 <div class="paragraph"><p>There are a few dozen subscribed members: core Git developers who are trusted
 766 with addressing vulnerabilities, and stakeholders (i.e. owners of products
 767 affected by security vulnerabilities in Git).</p></div>
 768 <div class="paragraph"><p>Most of the discussions revolve around assessing the severity of the reported
 769 issue (including the decision whether the report is security-relevant or can be
 770 redirected to the public mailing list), how to remediate the issue, determining
 771 the timeline of the disclosure as well as aligning priorities and
 772 requirements.</p></div>
 773 </div>
 774 <div class="sect2">
 775 <h3 id="_communications">Communications</h3>
 776 <div class="paragraph"><p>If you are a stakeholder, it is a good idea to pay close attention to the
 777 discussions, as pertinent information may be buried in the middle of a lively
 778 conversation that might not look relevant to your interests. For example, the
 779 tentative timeline might be agreed upon in the middle of discussing code
 780 comment formatting in one of the patches and whether or not to combine fixes
 781 for multiple, separate vulnerabilities into the same embargoed release. Most
 782 mail threads are not usually structured specifically to communicate
 783 agreements, assessments or timelines.</p></div>
 784 </div>
 785 </div>
 786 </div>
 787 <div class="sect1">
 788 <h2 id="_typical_timeline">Typical timeline</h2>
 789 <div class="sectionbody">
 790 <div class="ulist"><ul>
 791 <li>
 792 <p>
 793 A potential vulnerability is reported to the <code>git-security</code> mailing list.
 794 </p>
 795 </li>
 796 <li>
 797 <p>
 798 The members of the git-security list start a discussion to give an initial
 799   assessment of the severity of the reported potential vulnerability.
 800   We aspire to do so within a few days.
 801 </p>
 802 </li>
 803 <li>
 804 <p>
 805 After discussion, if consensus is reached that it is not critical enough
 806   to warrant any embargo, the reporter is redirected to the public Git mailing
 807   list. This ends the reporter&#8217;s interaction with the <code>git-security</code> list.
 808 </p>
 809 </li>
 810 <li>
 811 <p>
 812 If it is deemed critical enough for an embargo, ideas are presented on how to
 813   address the vulnerability.
 814 </p>
 815 </li>
 816 <li>
 817 <p>
 818 Usually around that time, the Git maintainer or their delegate(s) open a draft
 819   security advisory in the <code>git/git</code> repository on GitHub (see below for more
 820   details).
 821 </p>
 822 </li>
 823 <li>
 824 <p>
 825 Code review can take place in a variety of different locations,
 826   depending on context. These are: patches sent inline on the git-security list,
 827   a private fork on GitHub associated with the draft security advisory, or the
 828   git/cabal repository.
 829 </p>
 830 </li>
 831 <li>
 832 <p>
 833 Contributors working on a fix should consider beginning by sending
 834   patches to the git-security list (inline with the original thread), since they
 835   are accessible to all subscribers, along with the original reporter.
 836 </p>
 837 </li>
 838 <li>
 839 <p>
 840 Once the review has settled and everyone involved in the review agrees that
 841   the patches are nearing the finish line, the Git maintainer, and others
 842   determine a release date as well as the release trains that are serviced. The
 843   decision regarding which versions need a backported fix is based on input from
 844   the reporter, the contributor who worked on the patches, and from
 845   stakeholders. Operators of hosting sites who may want to analyze whether the
 846   given issue is exploited via any of the repositories they host, and binary
 847   packagers who want to make sure their product gets patched adequately against
 848   the vulnerability, for example, may want to give their input at this stage.
 849 </p>
 850 </li>
 851 <li>
 852 <p>
 853 While the Git community does its best to accommodate the specific timeline
 854   requests of the various binary packagers, the nature of the issue may preclude
 855   a prolonged release schedule. For fixes deemed urgent, it may be in the best
 856   interest of the Git users community to shorten the disclosure and release
 857   timeline, and packagers may need to adapt accordingly.
 858 </p>
 859 </li>
 860 <li>
 861 <p>
 862 Subsequently, branches with the fixes are pushed to the git/cabal repository.
 863 </p>
 864 </li>
 865 <li>
 866 <p>
 867 The tags are created by the Git maintainer and pushed to the same repository.
 868 </p>
 869 </li>
 870 <li>
 871 <p>
 872 The Git for Windows, Git for macOS, BSD, Debian, etc. maintainers prepare the
 873   corresponding release artifacts, based on the tags created that have been
 874   prepared by the Git maintainer.
 875 </p>
 876 </li>
 877 <li>
 878 <p>
 879 The release artifacts prepared by various binary packagers can be
 880   made available to stakeholders under embargo via a mail to the
 881   <code>git-security</code> list.
 882 </p>
 883 </li>
 884 <li>
 885 <p>
 886 Less than a week before the release, a mail with the relevant information is
 887   sent to &lt;<a href="mailto:distros@vs.openwall.org">distros@vs.openwall.org</a>&gt; (see below), a list used to pre-announce
 888   embargoed releases of open source projects to the stakeholders of all major
 889   distributions of Linux as well as other OSes.
 890 </p>
 891 </li>
 892 <li>
 893 <p>
 894 Public communication is then prepared in advance of the release date. This
 895   includes blog posts and mails to the Git and Git for Windows mailing lists.
 896 </p>
 897 </li>
 898 <li>
 899 <p>
 900 On the day of the release, at around 10am Pacific Time, the Git maintainer
 901   pushes the tag and the <code>master</code> branch to the public repository, then sends
 902   out an announcement mail.
 903 </p>
 904 </li>
 905 <li>
 906 <p>
 907 Once the tag is pushed, the Git for Windows maintainer publishes the
 908   corresponding tag and creates a GitHub Release with the associated release
 909   artifacts (Git for Windows installer, Portable Git, MinGit, etc).
 910 </p>
 911 </li>
 912 <li>
 913 <p>
 914 Git for Windows release is then announced via a mail to the public Git and
 915   Git for Windows mailing lists as well as via a tweet.
 916 </p>
 917 </li>
 918 <li>
 919 <p>
 920 Ditto for distribution packagers for Linux and other platforms:
 921   their releases are announced via their preferred channels.
 922 </p>
 923 </li>
 924 <li>
 925 <p>
 926 A mail to &lt;<a href="mailto:oss-security@lists.openwall.org">oss-security@lists.openwall.org</a>&gt; (see below for details) is sent
 927   as a follow-up to the &lt;<a href="mailto:distros@vs.openwall.org">distros@vs.openwall.org</a>&gt; one, describing the
 928   vulnerability in detail, often including a proof of concept of an exploit.
 929 </p>
 930 </li>
 931 </ul></div>
 932 <div class="paragraph"><p>Note: The Git project makes no guarantees about timelines, but aims to keep
 933 embargoes reasonably short in the interest of keeping Git&#8217;s users safe.</p></div>
 934 <div class="sect2">
 935 <h3 id="_opening_a_security_advisory_draft">Opening a Security Advisory draft</h3>
 936 <div class="paragraph"><p>The first step is to <a href="https://github.com/git/git/security/advisories/new">open
 937 an advisory</a>. Technically, this is not necessary. However, it is the most
 938 convenient way to obtain the CVE number and it gives us a private repository
 939 associated with it that can be used to collaborate on a fix.</p></div>
 940 </div>
 941 <div class="sect2">
 942 <h3 id="_notifying_the_linux_distributions">Notifying the Linux distributions</h3>
 943 <div class="paragraph"><p>At most two weeks before release date, we need to send a notification to
 944 &lt;<a href="mailto:distros@vs.openwall.org">distros@vs.openwall.org</a>&gt;, preferably less than 7 days before the release date.
 945 This will reach most (all?) Linux distributions. See an example below, and the
 946 guidelines for this mailing list at
 947 <a href="https://oss-security.openwall.org/wiki/mailing-lists/distros#how-to-use-the-lists">here</a>.</p></div>
 948 <div class="paragraph"><p>Once the version has been published, we send a note about that to oss-security.
 949 As an example, see <a href="https://www.openwall.com/lists/oss-security/2019/12/13/1">the
 950 v2.24.1 mail</a>;
 951 <a href="https://oss-security.openwall.org/wiki/mailing-lists/oss-security">Here</a> are
 952 their guidelines.</p></div>
 953 <div class="paragraph"><p>The mail to oss-security should also describe the exploit, and give credit to
 954 the reporter(s): security researchers still receive too little respect for the
 955 invaluable service they provide, and public credit goes a long way to keep them
 956 paid by their respective organizations.</p></div>
 957 <div class="paragraph"><p>Technically, describing any exploit can be delayed up to 7 days, but we usually
 958 refrain from doing that, including it right away.</p></div>
 959 <div class="paragraph"><p>As a courtesy we typically attach a Git bundle (as <code>.tar.xz</code> because the list
 960 will drop <code>.bundle</code> attachments) in the mail to distros@ so that the involved
 961 parties can take care of integrating/backporting them. This bundle is typically
 962 created using a command like this:</p></div>
 963 <div class="literalblock">
 964 <div class="content">
 965 <pre><code>git bundle create cve-xxx.bundle ^origin/master vA.B.C vD.E.F
 966 tar cJvf cve-xxx.bundle.tar.xz cve-xxx.bundle</code></pre>
 967 </div></div>
 968 </div>
 969 <div class="sect2">
 970 <h3 id="_example_mail_to_a_href_mailto_distros_vs_openwall_org_distros_vs_openwall_org_a">Example mail to <a href="mailto:distros@vs.openwall.org">distros@vs.openwall.org</a></h3>
 971 <div class="literalblock">
 972 <div class="content">
 973 <pre><code>To: distros@vs.openwall.org
 974 Cc: git-security@googlegroups.com, &lt;other people involved in the report/fix&gt;
 975 Subject: [vs] Upcoming Git security fix release
 976
 977 Team,
 978
 979 The Git project will release new versions on &lt;date&gt; at 10am Pacific Time or
 980 soon thereafter. I have attached a Git bundle (embedded in a `.tar.xz` to avoid
 981 it being dropped) which you can fetch into a clone of
 982 https://github.com/git/git via `git fetch --tags /path/to/cve-xxx.bundle`,
 983 containing the tags for versions &lt;versions&gt;.
 984
 985 You can verify with `git tag -v &lt;tag&gt;` that the versions were signed by
 986 the Git maintainer, using the same GPG key as e.g. v2.24.0.
 987
 988 Please use these tags to prepare `git` packages for your various
 989 distributions, using the appropriate tagged versions. The added test cases
 990 help verify the correctness.
 991
 992 The addressed issues are:
 993
 994 &lt;list of CVEs with a short description, typically copy/pasted from Git's
 995 release notes, usually demo exploit(s), too&gt;
 996
 997 Credit for finding the vulnerability goes to &lt;reporter&gt;, credit for fixing
 998 it goes to &lt;developer&gt;.
 999
1000 Thanks,
1001 &lt;name&gt;</code></pre>
1002 </div></div>
1003 </div>
1004 <div class="sect2">
1005 <h3 id="_example_mail_to_a_href_mailto_oss_security_lists_openwall_com_oss_security_lists_openwall_com_a">Example mail to <a href="mailto:oss-security@lists.openwall.com">oss-security@lists.openwall.com</a></h3>
1006 <div class="literalblock">
1007 <div class="content">
1008 <pre><code>To: oss-security@lists.openwall.com
1009 Cc: git-security@googlegroups.com, &lt;other people involved in the report/fix&gt;
1010 Subject: git: &lt;copy from security advisory&gt;
1011
1012 Team,
1013
1014 The Git project released new versions on &lt;date&gt;, addressing &lt;CVE&gt;.
1015
1016 All supported platforms are affected in one way or another, and all Git
1017 versions all the way back to &lt;version&gt; are affected. The fixed versions are:
1018 &lt;versions&gt;.
1019
1020 Link to the announcement: &lt;link to lore.kernel.org/git&gt;
1021
1022 We highly recommend to upgrade.
1023
1024 The addressed issues are:
1025 * &lt;list of CVEs and their explanations, along with demo exploits&gt;
1026
1027 Credit for finding the vulnerability goes to &lt;reporter&gt;, credit for fixing
1028 it goes to &lt;developer&gt;.
1029
1030 Thanks,
1031 &lt;name&gt;</code></pre>
1032 </div></div>
1033 </div>
1034 </div>
1035 </div>
1036 </div>
1037 <div id="footnotes"><hr /></div>
1038 <div id="footer">
1039 <div id="footer-text">
1040 Last updated
1041  2024-05-13 12:27:19 PDT
1042 </div>
1043 </div>
1044 </body>
1045 </html>