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Vulnerability · Published Dec 18, 2023 · Assigned by mitre

CVE-2023-51384

Medium 5.5

In plain English

A medium-severity improper access control in the openssh package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.4%top 63.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In ssh-agent in OpenSSH before 9.6, certain destination constraints can be incompletely applied. When destination constraints are specified during addition of PKCS#11-hosted private keys, these constraints are only applied to the first key, even if a PKCS#11 token returns multiple keys.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20openssh9.6_p1-r0ALPINE-CVE-2023-51384
Alpine:v3.21openssh9.6_p1-r0ALPINE-CVE-2023-51384
Alpine:v3.22openssh9.6_p1-r0ALPINE-CVE-2023-51384
Alpine:v3.23openssh9.6_p1-r0ALPINE-CVE-2023-51384
Alpine:v3.24openssh9.6_p1-r0ALPINE-CVE-2023-51384
Debian:12openssh1:9.2p1-2+deb12u2DEBIAN-CVE-2023-51384
Debian:13openssh1:9.6p1-1DEBIAN-CVE-2023-51384
Debian:14openssh1:9.6p1-1DEBIAN-CVE-2023-51384
Ubuntu:22.04:LTSopenssh1:8.9p1-3ubuntu0.6USN-6565-1
Ubuntu:22.04:LTSopenssh1:8.9p1-3ubuntu0.6UBUNTU-CVE-2023-51384
Ubuntu:24.04:LTSopenssh1:9.6p1-3ubuntu1UBUNTU-CVE-2023-51384
Ubuntu:22.04:LTSopenssh-ssh1no fix listedUBUNTU-CVE-2023-51384
Ubuntu:24.04:LTSopenssh-ssh1no fix listedUBUNTU-CVE-2023-51384

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-284 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References