plugins/mod_compression.lua in (1) Prosody before 0.9.4 and (2) Lightwitch Metronome through 3.4 negotiates stream compression while a session is unauthenticated, which allows remote attackers to cause a denial of service (resource consumption) via compressed XML elements in an XMPP stream, aka an "xmppbomb" attack.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Link | Tags |
---|---|
http://xmpp.org/resources/security-notices/uncontrolled-resource-consumption-with-highly-compressed-xmpp-stanzas/ | |
http://www.debian.org/security/2014/dsa-2895 | vendor advisory |
http://secunia.com/advisories/57710 | third party advisory |
http://code.lightwitch.org/metronome/rev/49f47277a411 | patch exploit |
http://blog.prosody.im/prosody-0-9-4-released/ | vendor advisory |
http://hg.prosody.im/0.9/rev/b3b1c9da38fb | patch exploit |
http://openwall.com/lists/oss-security/2014/04/09/1 | mailing list |
http://openwall.com/lists/oss-security/2014/04/07/7 | mailing list |