CVE-2022-0217 Information

Description

It was discovered that an internal Prosody library to load XML based on libexpat does not properly restrict the XML features allowed in parsed XML data. Given suitable attacker input this results in expansion of recursive entity references from DTDs (CWE-776). In addition depending on the libexpat version used it may also allow injections using XML External Entity References (CWE-611).

Reference

https://prosody.im/security/advisory_20220113/ https://bugzilla.redhat.com/show_bug.cgi?id=2040639 https://prosody.im/security/advisory_20220113/1.patch