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openMosixview: Insecure temporary file creation

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200504-20 / openMosixview
Release Date April 21, 2005
Latest Revision April 21, 2005: 01
Impact normal
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
sys-cluster/openmosixview < 1.5-r1 >= 1.5-r1 All supported architectures

Related bugreports: #86686

Synopsis

openMosixview and the openMosixcollector daemon are vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files.

2.  Impact Information

Background

The openMosixview package contains several tools used to manage openMosix clusters, including openMosixview (the main monitoring and administration application) and openMosixcollector (a daemon collecting cluster and node information).

Description

Gangstuck and Psirac from Rexotec discovered that openMosixview insecurely creates several temporary files with predictable filenames.

Impact

A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When openMosixView or the openMosixcollector daemon runs, this would result in the file being overwritten with the rights of the user running the utility, which could be the root user.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All openMosixview users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-cluster/openmosixview-1.5-r1"

4.  References



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Page updated April 21, 2005

Summary: This is a Gentoo Linux Security Advisory

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