CVE-2024-7589 — Race Condition in Freebsd

CWE-362 — Race ConditionCWE-364 — Signal Handler Race Condition6 documents6 sources
Severity
8.1HIGHNVD
EPSS
17.4%
top 4.92%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Freebsd
Timeline
PublishedAug 12

Description

A signal handler in sshd(8) may call a logging function that is not async-signal-safe. The signal handler is invoked when a client does not authenticate within the LoginGraceTime seconds (120 by default). This signal handler executes in the context of the sshd(8)'s privileged code, which is not sandboxed and runs with full root privileges. This issue is another instance of the problem in CVE-2024-6387 addressed by FreeBSD-SA-24:04.openssh. The faulty code in this case is from the integration of…

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 2.2 | Impact: 5.9

Affected Packages2 packages

▶CVEListV5freebsd/freebsd14.1-RELEASE — p3+2
▶NVDfreebsd/freebsd13.1 — 13.3+4

🔴Vulnerability Details

2
GHSA
GHSA-j7jm-6q5x-ffr4: A signal handler in sshd(8) may call a logging function that is not async-signal-safe↗2024-08-12
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CVEList
OpenSSH pre-authentication async signal safety issue↗2024-08-11
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📋Vendor Advisories

3
Red Hat
openssh: OpenSSH pre-authentication async signal safety issue↗2024-08-12
▶
BSD
FreeBSD-SA-24:08.openssh: OpenSSH pre-authentication async signal safety issue↗2024-08-07
▶
Debian
CVE-2024-7589: openssh - A signal handler in sshd(8) may call a logging function that is not async-signal...↗2024
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