CVE-2022-0217

CVSS V2 None CVSS V3 High 7.5

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).

Overview

CVE ID
CVE-2022-0217

Assigner
secalert@redhat.com

Vulnerability Status
Analyzed

Published Version
2022-08-26T18:15:08

Last Modified Date
2022-09-01T19:04:07

Weakness Enumerations

CWE	URL
CWE-776	http://cwe.mitre.org/data/definitions/776.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:prosody:prosody::::::::	1	OR		0.11.12

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
7.5

Base Severity
HIGH

Exploitability Score
3.9

Impact Score
3.6

References

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

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2022-0217
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-0217

History

Created	Old Value	New Value	Data Type	Notes
2022-08-26 19:00:10				Added to TrackCVE