National Cyber-Alert System
Vulnerability Summary for CVE-2008-5394
Original release date:12/09/2008
Last revised:06/09/2009
Source:
US-CERT/NIST
Overview
/bin/login in shadow 4.0.18.1 in Debian GNU/Linux, and probably other Linux distributions, allows local users in the utmp group to overwrite arbitrary files via a symlink attack on a temporary file referenced in a line (aka ut_line) field in a utmp entry.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
- Official Statement from Red Hat (12/18/2008)
-
Not vulnerable. This issue did not affect the versions of the util-linux packages (providing /bin/login), as shipped with Red Hat Enterprise Linux 2.1, 3, 4 or 5.
References to Advisories, Solutions, and Tools
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External Source: XF
Name: debian-login-symlink(47037)
External Source: UBUNTU
Name: USN-695-1
External Source: BID
Name: 32552
External Source: BUGTRAQ
Name: 20081130 /bin/login gives root to group utmp
External Source: MILW0RM
Name: 7313
External Source: MANDRIVA
Name: MDVSA-2009:062
External Source: SREASON
Name: 4695
External Source: GENTOO
Name: GLSA-200903-24
External Source: CONFIRM
Name: http://bugs.debian.org/505271
External Source: CONFIRM
Name: http://bugs.debian.org/505071
External Source: CONFIRM
Name: http://bugs.debian.org/332198