Gentoo Archives: gentoo-announce

From: Alex Legler <a3li@g.o>
To: gentoo-announce@l.g.o
Cc: bugtraq@×××××××××××××.com, full-disclosure@××××××××××××××.uk, security-alerts@×××××××××××××.com
Subject: [gentoo-announce] [ GLSA 200907-12 ] ISC DHCP: dhcpclient Remote execution of arbitrary code
Date: Tue, 14 Jul 2009 18:11:16
Message-Id: 1247594943.4232.50.camel@localhost
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2 Gentoo Linux Security Advisory GLSA 200907-12
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4 http://security.gentoo.org/
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6
7 Severity: High
8 Title: ISC DHCP: dhcpclient Remote execution of arbitrary code
9 Date: July 14, 2009
10 Bugs: #277729
11 ID: 200907-12
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14
15 Synopsis
16 ========
17
18 A buffer overflow in dhclient as included in the ISC DHCP
19 implementation allows for the remote execution of arbitrary code with
20 root privileges.
21
22 Background
23 ==========
24
25 ISC DHCP is the reference implementation of the Dynamic Host
26 Configuration Protocol as specified in RFC 2131.
27
28 Affected packages
29 =================
30
31 -------------------------------------------------------------------
32 Package / Vulnerable / Unaffected
33 -------------------------------------------------------------------
34 1 net-misc/dhcp < 3.1.1-r1 >= 3.1.1-r1
35
36 Description
37 ===========
38
39 The Mandriva Linux Engineering Team has reported a stack-based buffer
40 overflow in the subnet-mask handling of dhclient.
41
42 Impact
43 ======
44
45 A remote attacker might set up a rogue DHCP server in a victim's local
46 network, possibly leading to the execution of arbitrary code with root
47 privileges.
48
49 Workaround
50 ==========
51
52 There is no known workaround at this time.
53
54 Resolution
55 ==========
56
57 All ISC DHCP users should upgrade to the latest version:
58
59 # emerge --sync
60 # emerge --ask --oneshot --verbose ">=net-misc/dhcp-3.1.1-r1"
61
62 References
63 ==========
64
65 [ 1 ] CVE-2009-0692
66 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0692
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-200907-12.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 2009 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

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