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FreeBSD: VID-09B7CD39-47BD-11EE-8E38-002590C1F29C (CVE-2023-25136): FreeBSD -- OpenSSH pre-authentication double free

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FreeBSD: VID-09B7CD39-47BD-11EE-8E38-002590C1F29C (CVE-2023-25136): FreeBSD -- OpenSSH pre-authentication double free

Severity
8
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:C)
Published
02/03/2023
Created
09/05/2023
Added
08/31/2023
Modified
01/28/2025

Description

OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states "remote code execution is theoretically possible."

Solution(s)

  • freebsd-upgrade-base-12_4-release-p2

References

  • CVE-2023-25136
  • 查看数 695
  • 已创建
  • 最后回复

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