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Vulnerability · Published Mar 17, 2023 · Assigned by mitre

CVE-2023-28531

Critical 9.8

In plain English

A critical-severity improper access control in the openssh package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.0% (higher than 87% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)3.0%top 12.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12openssh1:9.2p1-2+deb12u2DEBIAN-CVE-2023-28531
Debian:13openssh1:9.3p1-1DEBIAN-CVE-2023-28531
Debian:14openssh1:9.3p1-1DEBIAN-CVE-2023-28531
Ubuntu:22.04:LTSopenssh1:8.9p1-3ubuntu0.5USN-6560-1
Ubuntu:22.04:LTSopenssh1:8.9p1-3ubuntu0.5UBUNTU-CVE-2023-28531

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-284

References