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<h2>DTSA-27-1</h2>
<dl>
<dt>Date Reported:</dt>
<dd>Janurary 20th, 2006</dd>
<dt>Affected Package:</dt>
<dd><a href='http://packages.debian.org/src:fuse'>fuse</a></dd>
<dt>Vulnerability:</dt>
<dd>potential data corruption when installed seduid root</dd>
<dt>Problem-Scope:</dt>
<dd>local</dd>
<dt>Debian-specific:</dt>
<dd>No<br></dd>
<dt>CVE:</dt>
<dd>
<a href='http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3531'>CVE-2005-3531</a>
<br></dd>
<br><dt>More information:</dt>
<dd>Thomas Biege discovered that fusermount in FUSE before 2.4.1, if installed <br>
setuid root, allows local users to corrupt /etc/mtab and possibly modify mount <br>
options by performing a mount over a directory whose name contains certain <br>
special characters <br>
<br>
Successful exploitation could result in a denial of service if mount options <br>
become unusable. An attacker can also exploit this issue to add arbitrary mount <br>
points that could grant the attacker read and possibly write access to <br>
otherwise restricted or privileged mount points. Other attacks are also <br>
possible. <br>
</dd>
<br><dt>For the testing distribution (etch) this is fixed in version 2.3.0-4.2etch1</dt>
<dt>For the unstable distribution (sid) this is fixed in version 2.4.1-0.1</dt>
<br><dt>This upgrade is recommended if you use fuse.<dt>
<br><dt>If you have the secure testing lines in your sources.list, you can update by running this command as root:</dt>
<dd>apt-get update && apt-get upgrade</dd>
<br>
<br>
<dt>To use the Debian testing security archive, add the following lines to your /etc/apt/sources.list:<dt>
<br>
<dd>deb http://secure-testing-mirrors.debian.net/debian-secure-testing etch-proposed-updates/security-updates main contrib non-free</dd>
<dd>deb-src http://secure-testing-mirrors.debian.net/debian-secure-testing etch-proposed-updates/security-updates main contrib non-free</dd>
<br>
<dt>The archive signing key can be downloaded from<dt>
<dd><a href='http://secure-testing.debian.net/ziyi-2005-7.asc'>http://secure-testing.debian.net/ziyi-2005-7.asc</a><dd>
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