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).

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=2040639	Issue Tracking Third Party Advisory
https://prosody.im/security/advisory_20220113/	Exploit Patch Vendor Advisory
https://prosody.im/security/advisory_20220113/1.patch	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2022-08-26 18:15

Updated : 2023-11-07 03:41

NVD link : CVE-2022-0217

Mitre link : CVE-2022-0217

CVE.ORG link : CVE-2022-0217

JSON object : View

Products Affected

prosody

prosody

CWE

CWE-611

Improper Restriction of XML External Entity Reference

CWE-776

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

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