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CVE-2023-35784: Double Free

June 16, 2023 (updated November 9, 2023)

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.

References

  • ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.3-relnotes.txt
  • ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.7.3-relnotes.txt
  • ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/026_ssl.patch.sig
  • ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/004_ssl.patch.sig
  • github.com/libressl/openbsd/commit/1d6680b3682f8caba78c627dee60c76da6e20dd7
  • github.com/libressl/openbsd/commit/96094ca8757b95298f49d65c813f303bd514b27b
  • nvd.nist.gov/vuln/detail/CVE-2023-35784

Code Behaviors & Features

Detect and mitigate CVE-2023-35784 with GitLab Dependency Scanning

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Affected versions

All versions before 3.6.3, all versions starting from 3.7.0 before 3.7.3

Fixed versions

  • 3.6.3
  • 3.7.3

Solution

Upgrade to versions 3.6.3, 3.7.3 or above.

Impact 9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-415: Double Free

Source file

conan/libressl/CVE-2023-35784.yml

Spotted a mistake? Edit the file on GitLab.

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