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.
References (10)
Core 10
Core References
Release Notes
https://www.openssh.com/txt/release-9.6
Mailing List, Release Notes
https://www.openwall.com/lists/oss-security/2023/12/18/2
Third Party Advisory vendor-advisory
https://www.debian.org/security/2023/dsa-5586
Mailing List, Third Party Advisory mailing-list
http://seclists.org/fulldisclosure/2024/Mar/21
Patch, Third Party Advisory
https://github.com/openssh/openssh-portable/commit/881d9c6af9da4257c69c327c4e2f1508b2fa754b
Third Party Advisory
https://security.netapp.com/advisory/ntap-20240105-0005/
Third Party Advisory
https://support.apple.com/kb/HT214084
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-769027.html
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
Scores
CVSS v3
5.5
EPSS
0.0003
EPSS Percentile
8.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Details
Status
published
Products (3)
debian/debian_linux
11.0
debian/debian_linux
12.0
openbsd/openssh
8.9 - 9.6
Published
Dec 18, 2023
Tracked Since
Feb 18, 2026