1 NTP 4.2.4p8 (Harlan Stenn <stenn@ntp.org>, 2009/12/08)
7 This release fixes the following high-severity vulnerability:
9 * [Sec 1331] DoS with mode 7 packets - CVE-2009-3563.
11 See http://support.ntp.org/security for more information.
13 NTP mode 7 (MODE_PRIVATE) is used by the ntpdc query and control utility.
14 In contrast, ntpq uses NTP mode 6 (MODE_CONTROL), while routine NTP time
15 transfers use modes 1 through 5. Upon receipt of an incorrect mode 7
16 request or a mode 7 error response from an address which is not listed
17 in a "restrict ... noquery" or "restrict ... ignore" statement, ntpd will
18 reply with a mode 7 error response (and log a message). In this case:
20 * If an attacker spoofs the source address of ntpd host A in a
21 mode 7 response packet sent to ntpd host B, both A and B will
22 continuously send each other error responses, for as long as
23 those packets get through.
25 * If an attacker spoofs an address of ntpd host A in a mode 7
26 response packet sent to ntpd host A, A will respond to itself
27 endlessly, consuming CPU and logging excessively.
29 Credit for finding this vulnerability goes to Robin Park and Dmitri
30 Vinokurov of Alcatel-Lucent.
32 THIS IS A STRONGLY RECOMMENDED UPGRADE.
35 NTP 4.2.4p7 (Harlan Stenn <stenn@ntp.org>, 2009/05/04)
37 Focus: Security and Bug Fixes
41 This release fixes the following high-severity vulnerability:
43 * [Sec 1151] Remote exploit if autokey is enabled. CVE-2009-1252
45 See http://support.ntp.org/security for more information.
47 If autokey is enabled (if ntp.conf contains a "crypto pw whatever"
48 line) then a carefully crafted packet sent to the machine will cause
49 a buffer overflow and possible execution of injected code, running
50 with the privileges of the ntpd process (often root).
52 Credit for finding this vulnerability goes to Chris Ries of CMU.
54 This release fixes the following low-severity vulnerabilities:
56 * [Sec 1144] limited (two byte) buffer overflow in ntpq. CVE-2009-0159
57 Credit for finding this vulnerability goes to Geoff Keating of Apple.
59 * [Sec 1149] use SO_EXCLUSIVEADDRUSE on Windows
60 Credit for finding this issue goes to Dave Hart.
62 This release fixes a number of bugs and adds some improvements:
65 * Fix many compiler warnings
66 * Many fixes and improvements for Windows
67 * Adds support for AIX 6.1
68 * Resolves some issues under MacOS X and Solaris
70 THIS IS A STRONGLY RECOMMENDED UPGRADE.
73 NTP 4.2.4p6 (Harlan Stenn <stenn@ntp.org>, 2009/01/07)
79 This release fixes oCERT.org's CVE-2009-0021, a vulnerability affecting
80 the OpenSSL library relating to the incorrect checking of the return
81 value of EVP_VerifyFinal function.
83 Credit for finding this issue goes to the Google Security Team for
84 finding the original issue with OpenSSL, and to ocert.org for finding
85 the problem in NTP and telling us about it.
87 This is a recommended upgrade.
89 NTP 4.2.4p5 (Harlan Stenn <stenn@ntp.org>, 2008/08/17)
93 This release fixes a number of Windows-specific ntpd bugs and
94 platform-independent ntpdate bugs. A logging bugfix has been applied
97 The "dynamic" keyword and is now obsolete and deferred binding to local
98 interfaces is the new default. The minimum time restriction for the
99 interface update interval has been dropped.
101 A number of minor build system and documentation fixes are included.
103 This is a recommended upgrade for Windows.
106 NTP 4.2.4p4 (Harlan Stenn <stenn@ntp.org>, 2007/09/10)
108 Focus: Minor Bugfixes
110 This release updates certain copyright information, fixes several display
111 bugs in ntpdc, avoids SIGIO interrupting malloc(), cleans up file descriptor
112 shutdown in the parse refclock driver, removes some lint from the code,
113 stops accessing certain buffers immediately after they were freed, fixes
114 a problem with non-command-line specification of -6, and allows the loopback
115 interface to share addresses with other interfaces.
118 NTP 4.2.4p3 (Harlan Stenn <stenn@ntp.org>, 2007/06/29)
120 Focus: Minor Bugfixes
122 This release fixes a bug in Windows that made it difficult to
123 terminate ntpd under windows.
124 This is a recommended upgrade for Windows.
127 NTP 4.2.4p2 (Harlan Stenn <stenn@ntp.org>, 2007/06/19)
129 Focus: Minor Bugfixes
131 This release fixes a multicast mode authentication problem,
132 an error in NTP packet handling on Windows that could lead to
133 ntpd crashing, and several other minor bugs. Handling of
134 multicast interfaces and logging configuration were improved.
135 The required versions of autogen and libopts were incremented.
136 This is a recommended upgrade for Windows and multicast users.
139 NTP 4.2.4 (Harlan Stenn <stenn@ntp.org>, 2006/12/31)
141 Focus: enhancements and bug fixes.
143 Dynamic interface rescanning was added to simplify the use of ntpd in
144 conjunction with DHCP. GNU AutoGen is used for its command-line options
145 processing. Separate PPS devices are supported for PARSE refclocks, MD5
146 signatures are now provided for the release files. Drivers have been
147 added for some new ref-clocks and have been removed for some older
148 ref-clocks. This release also includes other improvements, documentation
151 K&R C is no longer supported as of NTP-4.2.4. We are now aiming for ANSI
155 NTP 4.2.0 (Harlan Stenn <stenn@ntp.org>, 2003/10/15)
157 Focus: enhancements and bug fixes.