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libxmljs2 type confusion vulnerability when parsing specially crafted XML

High severity GitHub Reviewed Published May 2, 2024 to the GitHub Advisory Database • Updated May 3, 2024

Package

npm libxmljs2 (npm)

Affected versions

<= 0.33.0

Patched versions

None

Description

libxmljs2 is vulnerable to type confusion when parsing a specially crafted XML while invoking a function on the result of attrs() that was called on a parsed node. This vulnerability might lead to denial of service (on both 32-bit systems and 64-bit systems), data leak, infinite loop and remote code execution (on 32-bit systems with the XML_PARSE_HUGE flag enabled). At the time of publication, there is no fix.

References

Published by the National Vulnerability Database May 2, 2024
Published to the GitHub Advisory Database May 2, 2024
Reviewed May 3, 2024
Last updated May 3, 2024

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.043%
(10th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2024-34393

GHSA ID

GHSA-mjr4-7xg5-pfvh

Source code

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