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Utempter symlink vulnerability

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200405-05 / utempter
Release Date May 13, 2004
Latest Revision May 13, 2004: 01
Impact normal
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
sys-apps/utempter < 0.5.5.4 >= 0.5.5.4 All supported architectures

Related bugreports: #49536

Synopsis

Utempter contains a vulnerability that may allow local users to overwrite arbitrary files via a symlink attack.

2.  Impact Information

Background

Utempter is an application that allows non-privileged apps to write utmp (login) info, which otherwise needs root access.

Description

Utempter contains a vulnerability that may allow local users to overwrite arbitrary files via a symlink attack.

Impact

This vulnerability may allow arbitrary files to be overwritten with root privileges.

3.  Resolution Information

Workaround

There is no known workaround at this time. All users are advised to upgrade to the latest available version of utempter.

Resolution

All users of utempter should upgrade to the latest stable version:

Code Listing 3.1: Resolution

# emerge sync
# emerge -pv ">=sys-apps/utempter-0.5.5.4"
# emerge ">=sys-apps/utempter-0.5.5.4"

4.  References



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Page updated May 13, 2004

Summary: This is a Gentoo Linux Security Advisory

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