CVE-2022-0217

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).

Affected

prosody

CVSS v3.1 NVD

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

5.41% chance of exploitation in the next 30 days, 93rd percentile

Published

2022-08-26

Updated

2024-08-02

Proof-of-concept exploits (1)

• https://prosody.im/security/advisory_20220113/

Security advisories

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

References

• CVE Record
• NVD entry