Summary
A denial-of-service vulnerability
has been reported in Prosody, a XMPP server. If compression is enabled, an attacker might send highly-compressed XML elements (attack known as zip bomb) over XMPP streams and consume all the resources of the server.
The SAX XML parser lua-expat is also affected by this issues.
Solution
For the stable distribution (wheezy),
this problem has been fixed in version 0.8.2-4+deb7u1 of prosody.
For the unstable distribution (sid), this problem has been fixed in version 0.9.4-1 of prosody.
For the stable distribution (wheezy), this problem has been fixed in version 1.2.0-5+deb7u1 of lua-expat.
For the unstable distribution (sid), this problem has been fixed in version 1.3.0-1 lua-expat.
We recommend that you upgrade your prosody and lua-expat packages.
Insight
Prosody IM is a simple-to-use XMPP
server. It is designed to be easy to extend via plugins, and light on resources.
Affected
prosody on Debian Linux
Detection
This check tests the installed software version using the apt package manager.
References
Updated on 2015-03-25
