Gentoo Archives: gentoo-announce

From: Raphael Marichez <falco@g.o>
To: gentoo-announce@g.o
Cc: bugtraq@×××××××××××××.com, full-disclosure@××××××××××××××.uk, security-alerts@×××××××××××××.com
Subject: [gentoo-announce] [ GLSA 200707-14 ] tcpdump: Integer overflow
Date: Sat, 28 Jul 2007 23:02:14
Message-Id: 20070728224240.GC14411@falco.falcal.net
1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
2 Gentoo Linux Security Advisory GLSA 200707-14
3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
4 http://security.gentoo.org/
5 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
6
7 Severity: High
8 Title: tcpdump: Integer overflow
9 Date: July 28, 2007
10 Bugs: #184815
11 ID: 200707-14
12
13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
14
15 Synopsis
16 ========
17
18 A vulnerability has been discovered in tcpdump, allowing for the
19 execution of arbitrary code, possibly with root privileges.
20
21 Background
22 ==========
23
24 tcpdump is a tool for capturing and inspecting network traffic.
25
26 Affected packages
27 =================
28
29 -------------------------------------------------------------------
30 Package / Vulnerable / Unaffected
31 -------------------------------------------------------------------
32 1 net-analyzer/tcpdump < 3.9.5-r3 >= 3.9.5-r3
33
34 Description
35 ===========
36
37 mu-b from Digital Labs discovered that the return value of a snprintf()
38 call is not properly checked before being used. This could lead to an
39 integer overflow.
40
41 Impact
42 ======
43
44 A remote attacker could send specially crafted BGP packets on a network
45 being monitored with tcpdump, possibly resulting in the execution of
46 arbitrary code with the privileges of the user running tcpdump, which
47 is usually root.
48
49 Workaround
50 ==========
51
52 There is no known workaround at this time.
53
54 Resolution
55 ==========
56
57 All tcpdump users should upgrade to the latest version:
58
59 # emerge --sync
60 # emerge --ask --oneshot --verbose ">=net-analyzer/tcpdump-3.9.5-r3"
61
62 References
63 ==========
64
65 [ 1 ] CVE-2007-3798
66 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3798
67
68 Availability
69 ============
70
71 This GLSA and any updates to it are available for viewing at
72 the Gentoo Security Website:
73
74 http://security.gentoo.org/glsa/glsa-200707-14.xml
75
76 Concerns?
77 =========
78
79 Security is a primary focus of Gentoo Linux and ensuring the
80 confidentiality and security of our users machines is of utmost
81 importance to us. Any security concerns should be addressed to
82 security@g.o or alternatively, you may file a bug at
83 http://bugs.gentoo.org.
84
85 License
86 =======
87
88 Copyright 2007 Gentoo Foundation, Inc; referenced text
89 belongs to its owner(s).
90
91 The contents of this document are licensed under the
92 Creative Commons - Attribution / Share Alike license.
93
94 http://creativecommons.org/licenses/by-sa/2.5