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Debian Security Advisory 2649-1

Debian Security Advisory 2649-1
Posted Mar 16, 2013
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2649-1 - Stefan Buhler discovered that the Debian specific configuration file for lighttpd webserver FastCGI PHP support used a fixed socket name in the world-writable /tmp directory. A symlink attack or a race condition could be exploited by a malicious user on the same machine to take over the PHP control socket and for example force the webserver to use a different PHP version.

tags | advisory, php
systems | linux, debian
advisories | CVE-2013-1427
SHA-256 | 43a6eda3742a2b84b15de50f0fa67bd3d40893152a3275c7fef8725adffc538e

Debian Security Advisory 2649-1

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2649-1 security@debian.org
http://www.debian.org/security/ Yves-Alexis Perez
March 15, 2013 http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : lighttpd
Vulnerability : fixed socket name in world-writable directory
Problem type : local
Debian-specific: yes
CVE ID : CVE-2013-1427
Debian Bug :

Stefan Bühler discovered that the Debian specific configuration file for
lighttpd webserver FastCGI PHP support used a fixed socket name in the
world-writable /tmp directory. A symlink attack or a race condition could be
exploited by a malicious user on the same machine to take over the PHP control
socket and for example force the webserver to use a different PHP version.

As the fix is in a configuration file lying in /etc, the update won't be
enforced if the file has been modified by the administrator. In that case, care
should be taken to manually apply the fix.

For the stable distribution (squeeze), this problem has been fixed in
version 1.4.28-2+squeeze1.3.

For the testing distribution (wheezy), this problem has been fixed in
version 1.4.31-4.

For the unstable distribution (sid), this problem has been fixed in
version 1.4.31-4.

We recommend that you upgrade your lighttpd packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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