Double Free in Openbsd Libressl
CVE-2023-35784
A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.
Vulnerability class: Double Free
EPSS: 0.009 (56.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Openbsd Libressl
- Openbsd — versions 7.2, 7.3
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch)
- cve@mitre.org (Patch)
- cve@mitre.org (Release Notes)
- cve@mitre.org (Release Notes)
- cve@mitre.org
Frequently asked questions
- What is CVE-2023-35784?
- CVE-2023-35784 is a critical-severity vulnerability in Openbsd Libressl, classified under Double Free. CVSS score: 9.8/10. Published 2023-06-16.
- How severe is CVE-2023-35784?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2023-35784 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.