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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.008 (55.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gitlab.gnome.org/GNOME/libxml2/-/issues/583 (Patch, Issue Tracking, Vendor Advisory)
- gitlab.gnome.org/GNOME/libxml2/-/issues/344 (Patch, Issue Tracking, Vendor Advisory)
- www.openwall.com/lists/oss-security/2023/10/06/5 (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.