Gentoo Archives: gentoo-announce

From: Thierry Carrez <koon@g.o>
To: gentoo-announce@l.g.o
Cc: bugtraq@×××××××××××××.com, full-disclosure@××××××××××××.com, security-alerts@×××××××××××××.com
Subject: [gentoo-announce] [ GLSA 200410-28 ] rssh: Format string vulnerability
Date: Wed, 27 Oct 2004 15:13:41
Message-Id: 417FB871.6090300@gentoo.org
1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
2 Gentoo Linux Security Advisory GLSA 200410-28
3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
4 http://security.gentoo.org/
5 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
6
7 Severity: High
8 Title: rssh: Format string vulnerability
9 Date: October 27, 2004
10 Bugs: #66988
11 ID: 200410-28
12
13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
14
15 Synopsis
16 ========
17
18 rssh is vulnerable to a format string vulnerability that allows
19 arbitrary execution of code with the rights of the connected user,
20 thereby bypassing rssh restrictions.
21
22 Background
23 ==========
24
25 rssh is a restricted shell, allowing only a few commands like scp or
26 sftp. It is often used as a complement to OpenSSH to provide limited
27 access to users.
28
29 Affected packages
30 =================
31
32 -------------------------------------------------------------------
33 Package / Vulnerable / Unaffected
34 -------------------------------------------------------------------
35 1 app-shells/rssh < 2.2.2 >= 2.2.2
36
37 Description
38 ===========
39
40 Florian Schilhabel from the Gentoo Linux Security Audit Team found a
41 format string vulnerability in rssh syslogging of failed commands.
42
43 Impact
44 ======
45
46 Using a malicious command, it may be possible for a remote
47 authenticated user to execute arbitrary code on the target machine with
48 user rights, effectively bypassing any restriction of rssh.
49
50 Workaround
51 ==========
52
53 There is no known workaround at this time.
54
55 Resolution
56 ==========
57
58 All rssh users should upgrade to the latest version:
59
60 # emerge --sync
61 # emerge --ask --oneshot --verbose ">=app-shells/rssh-2.2.2"
62
63 References
64 ==========
65
66 [ 1 ] rssh security announcement
67 http://www.pizzashack.org/rssh/security.shtml
68
69 Availability
70 ============
71
72 This GLSA and any updates to it are available for viewing at
73 the Gentoo Security Website:
74
75 http://security.gentoo.org/glsa/glsa-200410-28.xml
76
77 Concerns?
78 =========
79
80 Security is a primary focus of Gentoo Linux and ensuring the
81 confidentiality and security of our users machines is of utmost
82 importance to us. Any security concerns should be addressed to
83 security@g.o or alternatively, you may file a bug at
84 http://bugs.gentoo.org.
85
86 License
87 =======
88
89 Copyright 2004 Gentoo Foundation, Inc; referenced text
90 belongs to its owner(s).
91
92 The contents of this document are licensed under the
93 Creative Commons - Attribution / Share Alike license.
94
95 http://creativecommons.org/licenses/by-sa/1.0

Attachments

File name MIME type
signature.asc application/pgp-signature