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It was discovered that the internal hashing routine of libxml2, a library providing an extensive API to handle XML data, is vulnerable to predictable hash collisions. Given an attacker with knowledge of the hashing algorithm, it is possible to craft input that creates a large
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Debian Security Advisory DSA-2417-1 This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.debian.org/security/ Nico Golde
February 22, 2012 http://www.debian.org/security/faq
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Package : libxml2
Vulnerability : computational denial of service
Problem type : local/remote
Debian-specific: no
Debug bug : 660846
CVE ID : CVE-2012-0841
It was discovered that the internal hashing routine of libxml2,
a library providing an extensive API to handle XML data, is vulnerable to
predictable hash collisions. Given an attacker with knowledge of the
hashing algorithm, it is possible to craft input that creates a large
amount of collisions. As a result it is possible to perform denial of
service attacks against applications using libxml2 functionality because
of the computational overhead.
For the stable distribution (squeeze), this problem has been fixed in
version 2.7.8.dfsg-2+squeeze3.
For the testing (wheezy) and unstable (sid) distributions, this problem
will be fixed soon.
We recommend that you upgrade your libxml2 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: This email address is being protected from spambots. You need JavaScript enabled to view it.
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