Gentoo Archives: gentoo-announce

From: Sean Amoss <ackle@g.o>
To: gentoo-announce@g.o
Subject: [gentoo-announce] [ GLSA 201311-04 ] Vixie cron: Denial of Service
Date: Thu, 07 Nov 2013 02:13:24
Message-Id: 527AF5A8.5030705@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 201311-04
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4 http://security.gentoo.org/
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6
7 Severity: Normal
8 Title: Vixie cron: Denial of Service
9 Date: November 07, 2013
10 Bugs: #308055
11 ID: 201311-04
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14
15 Synopsis
16 ========
17
18 A vulnerability has been found in Vixie cron, allowing local attackers
19 to conduct symlink attacks.
20
21 Background
22 ==========
23
24 Paul Vixie's cron daemon, a fully featured crond implementation.
25
26 Affected packages
27 =================
28
29 -------------------------------------------------------------------
30 Package / Vulnerable / Unaffected
31 -------------------------------------------------------------------
32 1 sys-process/vixie-cron < 4.1-r14 >= 4.1-r14
33
34 Description
35 ===========
36
37 Vixie cron contains a race condition relating to atime and mtime values
38 of temporary files.
39
40 Impact
41 ======
42
43 A local attacker could change the modification time of files, possibly
44 resulting in a Denial of Service condition via a symlink attack.
45
46 Workaround
47 ==========
48
49 There is no known workaround at this time.
50
51 Resolution
52 ==========
53
54 All Vixie cron users should upgrade to the latest version:
55
56 # emerge --sync
57 # emerge --ask --oneshot --verbose ">=sys-process/vixie-cron-4.1-r14"
58
59 References
60 ==========
61
62 [ 1 ] CVE-2010-0424
63 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0424
64
65 Availability
66 ============
67
68 This GLSA and any updates to it are available for viewing at
69 the Gentoo Security Website:
70
71 http://security.gentoo.org/glsa/glsa-201311-04.xml
72
73 Concerns?
74 =========
75
76 Security is a primary focus of Gentoo Linux and ensuring the
77 confidentiality and security of our users' machines is of utmost
78 importance to us. Any security concerns should be addressed to
79 security@g.o or alternatively, you may file a bug at
80 https://bugs.gentoo.org.
81
82 License
83 =======
84
85 Copyright 2013 Gentoo Foundation, Inc; referenced text
86 belongs to its owner(s).
87
88 The contents of this document are licensed under the
89 Creative Commons - Attribution / Share Alike license.
90
91 http://creativecommons.org/licenses/by-sa/2.5

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