Debian Security Advisory

DSA-2249-1 jabberd14 -- denial of service

Date Reported:
31 Mar 2011
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2011-1754.
More information:

Wouter Coekaerts discovered that jabberd14, an instant messaging server using the Jabber/XMPP protocol, 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.

The oldstable distribution (lenny), does not contain jabberd14.

For the stable distribution (squeeze), this problem has been fixed in version

For the testing distribution (wheezy), this problem will be fixed soon.

For the unstable distribution (sid), this problem has been fixed in version

We recommend that you upgrade your jabberd14 packages.