CVE-2023-35784 json
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 bef…
published 2023-06-16 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-39781
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
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.
Patch / fix
- openbsd libressl 3.6.3, 3.7.3
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 22 mo ago
Exploit prediction
0.94% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Classification
References
- github.com /libressl/openbsd/commit/e42d8f4b21a8a498e2eabbffe4c7b7d4ef7cec54
-
ftp.openbsd.org
/pub/OpenBSD/patches/7.3/common/004_ssl.patch.sig
patch
-
ftp.openbsd.org
/pub/OpenBSD/patches/7.2/common/026_ssl.patch.sig
patch
-
ftp.openbsd.org
/pub/OpenBSD/LibreSSL/libressl-3.6.3-relnotes.txt
release-notes
-
ftp.openbsd.org
/pub/OpenBSD/LibreSSL/libressl-3.7.3-relnotes.txt
release-notes
Sources
- CVE List CVE-2023-35784
- NVD CVE-2023-35784
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