From:
[email protected]
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- ------------------------------------------------------------------------- Debian Security Advisory DSA-2250-1
[email protected] http://www.debian.org/security/ Nico Golde
March 31, 2011
http://www.debian.org/security/faq
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Package : citadel
Vulnerability : denial of service
Problem type : remote
Debian-specific: no
CVE ID : CVE-2011-1756
Wouter Coekaerts discovered that the jabber server component of citadel,
a complete and feature-rich groupware server, is vulnerable to the so-called "billion laughs" attack because it does not prevent entity expansion on received data. This allows an attacker to perform denial of service
attacks against the service by sending specially crafted XML data to it.
For the oldstable distribution (lenny), this problem has been fixed in
version 7.37-8+lenny1.
For the stable distribution (squeeze), this problem has been fixed in
version 7.83-2squeeze2.
For the testing (wheezy) and unstable(sid) distributions,
this problem will be fixed soon.
We recommend that you upgrade your citadel 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:
[email protected]
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