Vulnerabilities > CVE-2022-0217 - XML Entity Expansion vulnerability in Prosody

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

prosody

CWE-776

NVD

Published: 2022-08-26

Updated: 2024-11-21

Summary

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).

Vulnerable Configurations

Part	Description	Count
Application	Prosody Prosody Prosody - Prosody Prosody 0.1.0 Prosody Prosody 0.2.0 Prosody Prosody 0.3.0 Prosody Prosody 0.4.0 Prosody Prosody 0.4.1 Prosody Prosody 0.4.2 Prosody Prosody 0.5.0 Prosody Prosody 0.5.1 Prosody Prosody 0.5.2 Prosody Prosody 0.6.0 Prosody Prosody 0.6.1 Prosody Prosody 0.6.2 Prosody Prosody 0.7.0 Prosody Prosody 0.8.0 Prosody Prosody 0.8.1 Prosody Prosody 0.8.2 Prosody Prosody 0.9.0 Prosody Prosody 0.9.1 Prosody Prosody 0.9.2 Prosody Prosody 0.9.3 Prosody Prosody 0.9.4 Prosody Prosody 0.9.5 Prosody Prosody 0.9.6 Prosody Prosody 0.9.7 Prosody Prosody 0.9.8 Prosody Prosody 0.9.9 Prosody Prosody 0.9.10 Prosody Prosody 0.9.11 Prosody Prosody 0.9.12 Prosody Prosody 0.9.13 Prosody Prosody 0.9.14 Prosody Prosody 0.10.0 Prosody Prosody 0.10.1 Prosody Prosody 0.10.2 Prosody Prosody 0.10.3 Prosody Prosody 0.11.0 Prosody Prosody 0.11.1 Prosody Prosody 0.11.2 Prosody Prosody 0.11.3 Prosody Prosody 0.11.4 Prosody Prosody 0.11.5 Prosody Prosody 0.11.6 Prosody Prosody 0.11.7 Prosody Prosody 0.11.8 Prosody Prosody 0.11.9 Prosody Prosody 0.11.10 Prosody Prosody 0.11.11	48

Common Weakness Enumeration (CWE)

CWE-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')