Use After Free in Xmlsoft Libxml2
CVE-2023-45322
libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor's position is "I don't think these issues are critical enough to warrant a CVE ID ... because an attacker typically can't control when memory allocations fail."
Vulnerability class: Use-After-Free
EPSS: 0.008 (53.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Xmlsoft Libxml2
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch, Issue Tracking, Vendor Advisory)
- cve@mitre.org (Patch, Issue Tracking, Vendor Advisory)
- cve@mitre.org (mailing-list, Patch, Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-45322?
- CVE-2023-45322 is a medium-severity vulnerability in Xmlsoft Libxml2, classified under Use After Free. CVSS score: 6.5/10. Published 2023-10-06.
- How severe is CVE-2023-45322?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-45322 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.