Gentoo Archives: gentoo-announce

From: Sean Amoss <ackle@g.o>
To: gentoo-announce@l.g.o
Cc: bugtraq@×××××××××××××.com, full-disclosure@××××××××××××××.uk, security-alerts@×××××××××××××.com
Subject: [gentoo-announce] [ GLSA 201201-15 ] ktsuss: Privilege escalation
Date: Fri, 27 Jan 2012 15:11:24
Message-Id: 4F22BD34.3040806@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 201201-15
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4 http://security.gentoo.org/
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6
7 Severity: High
8 Title: ktsuss: Privilege escalation
9 Date: January 27, 2012
10 Bugs: #381115
11 ID: 201201-15
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14
15 Synopsis
16 ========
17
18 Two vulnerabilities have been found in ktsuss, allowing local attackers
19 to gain escalated privileges.
20
21 Background
22 ==========
23
24 ktsuss is a simple, graphical version of su written in C and GTK+.
25
26 Affected packages
27 =================
28
29 -------------------------------------------------------------------
30 Package / Vulnerable / Unaffected
31 -------------------------------------------------------------------
32 1 x11-misc/ktsuss <= 1.4 Vulnerable!
33 -------------------------------------------------------------------
34 NOTE: Certain packages are still vulnerable. Users should migrate
35 to another package if one is available or wait for the
36 existing packages to be marked stable by their
37 architecture maintainers.
38
39 Description
40 ===========
41
42 Two vulnerabilities have been found in ktuss:
43
44 * Under specific circumstances, ktsuss skips authentication and fails
45 to change the effective UID back to the real UID (CVE-2011-2921).
46 * The GTK interface spawned by the ktsuss binary is run as root
47 (CVE-2011-2922).
48
49 Impact
50 ======
51
52 A local attacker could gain escalated privileges and use the
53 "GTK_MODULES" environment variable to possibly execute arbitrary code
54 with root privileges.
55
56 Workaround
57 ==========
58
59 There is no known workaround at this time.
60
61 Resolution
62 ==========
63
64 Gentoo discontinued support for ktsuss. We recommend that users unmerge
65 ktsuss:
66
67 # emerge --unmerge "x11-misc/ktsuss"
68
69 References
70 ==========
71
72 [ 1 ] CVE-2011-2921
73 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2921
74 [ 2 ] CVE-2011-2922
75 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2922
76
77 Availability
78 ============
79
80 This GLSA and any updates to it are available for viewing at
81 the Gentoo Security Website:
82
83 http://security.gentoo.org/glsa/glsa-201201-15.xml
84
85 Concerns?
86 =========
87
88 Security is a primary focus of Gentoo Linux and ensuring the
89 confidentiality and security of our users' machines is of utmost
90 importance to us. Any security concerns should be addressed to
91 security@g.o or alternatively, you may file a bug at
92 https://bugs.gentoo.org.
93
94 License
95 =======
96
97 Copyright 2012 Gentoo Foundation, Inc; referenced text
98 belongs to its owner(s).
99
100 The contents of this document are licensed under the
101 Creative Commons - Attribution / Share Alike license.
102
103 http://creativecommons.org/licenses/by-sa/2.5

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