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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
---
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CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 29%
VendorProductVersion
openbsdlibressl
𝑥
< 3.6.3
openbsdlibressl
3.7.0 ≤
𝑥
< 3.7.3
openbsdopenbsd
7.2
openbsdopenbsd
7.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
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/7.2/common/026_ssl.patch.sig
https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/004_ssl.patch.sig
https://github.com/libressl/openbsd/commit/e42d8f4b21a8a498e2eabbffe4c7b7d4ef7cec54
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/7.2/common/026_ssl.patch.sig
https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/004_ssl.patch.sig
https://github.com/libressl/openbsd/commit/e42d8f4b21a8a498e2eabbffe4c7b7d4ef7cec54