Stefan Esser discovered that the implementation of the max_input_vars configuration variable in a recent PHP security update was flawed such that it allows remote attackers to crash PHP or potentially execute code.

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Debian Security Advisory DSA-2403-2                   This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.debian.org/security/                           Thijs Kinkhorst
February 06, 2012                      http://www.debian.org/security/faq
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Package        : php5
Vulnerability  : code injection
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2012-0830 

Stefan Esser discovered that the implementation of the max_input_vars
configuration variable in a recent PHP security update was flawed such
that it allows remote attackers to crash PHP or potentially execute
code.

This update adds packages for the oldstable distribution, which were
missing from the original advisory. The problem has been fixed in
version 5.2.6.dfsg.1-1+lenny16, installed into the security archive
on 3 Feb 2012.

For the stable distribution (squeeze), this problem has been fixed in
version 5.3.3-7+squeeze7.

For the unstable distribution (sid), this problem has been fixed in
version 5.3.10-1.

We recommend that you upgrade your php5 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/

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