Vulnerabilities > CVE-2023-35784 - Use After Free vulnerability in Openbsd Libressl and Openbsd
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
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.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.3-relnotes.txt
- https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.7.3-relnotes.txt
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/004_ssl.patch.sig
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/026_ssl.patch.sig
- https://github.com/libressl/openbsd/commit/e42d8f4b21a8a498e2eabbffe4c7b7d4ef7cec54