CVE-2023-51384 Security feature bypass in n/a
Attackers can bypass destination constraints on PKCS#11 keys in OpenSSH ssh-agent when multiple keys are returned, potentially allowing unauthorized key usage.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-51384?
CVE-2023-51384 is a medium-severity vulnerability in Debian Debian Linux, published on 18 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-284
Which versions are affected by CVE-2023-51384?
It affects 2 products.
Products include Debian Debian Linux, OpenSSH.
How do I fix CVE-2023-51384?
Upgrade to a fixed version.
Is CVE-2023-51384 being exploited?
There is no known exploitation of CVE-2023-51384 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2023-51384, AZL-32205, AZL-35081, BELL-CVE-2023-51384, DEBIAN-CVE-2023-51384, GHSA-44xq-r8h3-q4q6 and 3 more.