Openfire 3.9.1, and possibly earlier versions, contains an uncontrolled resource consumption (CWE-400) vulnerability when using XMPP DEFLATE message compression.
Openfire 3.9.1, and possibly earlier versions, contains an uncontrolled resource consumption (CWE-400) vulnerability when using XMPP DEFLATE message compression. It has been reported that a highly compressed XMPP message of 4MB that uncompresses to 4GB may cause a resource exhaustion denial of service. The highly compressed XMPP messages may be sent in parallel to enhance the denial of service.
A remote unauthenticated attacker may be able to cause a denial-of-service condition.
We are currently unaware of a practical solution to this problem. A fix is available in the development branch of Openfire but a stable release is not available yet. Please consider the following workarounds.
Restrict Network Access
As a general good security practice, only allow connections from trusted hosts and networks if possible. Restricting access would prevent an attacker from connecting to the service from a blocked network location.
Thanks to Giancarlo Pellegrino for reporting this vulnerability.
This document was written by Jared Allar.
|Date First Published:||2014-04-16|
|Date Last Updated:||2014-04-23 18:54 UTC|