Double Free in Xmlsoft Libxml2
CVE-2023-29469
An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value).
Vulnerability class: Double Free
EPSS: 0.010 (59.7th 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
- Debian Debian_linux — versions 10.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Issue Tracking, Vendor Advisory)
- cve@mitre.org (Release Notes)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org
Frequently asked questions
- What is CVE-2023-29469?
- CVE-2023-29469 is a medium-severity vulnerability in Xmlsoft Libxml2, classified under Double Free. CVSS score: 6.5/10. Published 2023-04-24.
- How severe is CVE-2023-29469?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-29469 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.