openssh: CVE-2023-51767

Debian Bug report logs - #1059393
openssh: CVE-2023-51767

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: openssh: CVE-2023-51767

Date: Sun, 24 Dec 2023 14:12:39 +0100

Source: openssh
Version: 1:9.6p1-2
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi Colin,

The following vulnerability was published for openssh. This is for now
just to track the issue as pointed out by a current paper. Apparently
openssh and sudo got CVEs assigned for their respective issues.

CVE-2023-51767[0]:
| OpenSSH through 9.6, when common types of DRAM are used, might allow
| row hammer attacks (for authentication bypass) because the integer
| value of authenticated in mm_answer_authpassword does not resist
| flips of a single bit. NOTE: this is applicable to a certain threat
| model of attacker-victim co-location in which the attacker has user
| privileges.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-51767
    https://www.cve.org/CVERecord?id=CVE-2023-51767
[1] https://arxiv.org/abs/2309.02545

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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