CVE-2023-28531
openssh: ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints
CVE-2023-28531 is fixed in 7 products on 1 platform, first by DEBIAN-CVE-2023-28531, released March 17, 2023. It is not reported as exploited. Patch Radar priority: Urgent.
Urgent
CVSS
9.8
critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0299
87th percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| openssh · Debian 12.15 (bookworm) | 1:9.2p1-2+deb12u2 | DEBIAN-CVE-2023-28531 | Mar 17, 2023 |
| openssh · Debian 13.5 (trixie) | 1:9.3p1-1 | DEBIAN-CVE-2023-28531 | Mar 17, 2023 |
| openssh · Debian 14 | 1:9.3p1-1 | DEBIAN-CVE-2023-28531 | Mar 17, 2023 |
| openssh-client · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.5 | openssh-client 1:8.9p1-3ubuntu0.5 | Dec 18, 2023 |
| openssh-server · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.5 | openssh-server 1:8.9p1-3ubuntu0.5 | Dec 18, 2023 |
| openssh-sftp-server · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.5 | openssh-sftp-server 1:8.9p1-3ubuntu0.5 | Dec 18, 2023 |
| openssh-tests · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.5 | openssh-tests 1:8.9p1-3ubuntu0.5 | Dec 18, 2023 |
| ssh · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.5 | ssh 1:8.9p1-3ubuntu0.5 | Dec 18, 2023 |
| ssh-askpass-gnome · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.5 | ssh-askpass-gnome 1:8.9p1-3ubuntu0.5 | Dec 18, 2023 |
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