libxmljs2 type confusion vulnerability when parsing specially crafted XML
Date: 2024-05
Affected: npm/libxmljs2
Attack vector: info-disclosure
Category: vulnerability-disclosure
Severity: Critical
CVE: CVE-2024-34393
CWE: CWE-843
CVSS: 8.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

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.


Mitigations:

Architectural layers (MAESTRO):