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).
References
| Link | Resource |
|---|---|
| https://prosody.im/security/advisory_20220113/ | Exploit Patch Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2040639 | Issue Tracking Third Party Advisory |
| https://prosody.im/security/advisory_20220113/1.patch | Patch Vendor Advisory |
Advertisement
Configurations
Information
Published : 2022-08-26 11:15
Updated : 2022-09-01 12:04
NVD link : CVE-2022-0217
Mitre link : CVE-2022-0217
JSON object : View
CWE
CWE-776
Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Advertisement
Products Affected
prosody
- prosody