Cybersecurity

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OpenSSH Flaw Allowing Full Root Shell Access Lurked for 15 Years - SecurityWeek (www.securityweek.com)

submitted 1 day ago by kid@sh.itjust.works to c/cybersecurity@sh.itjust.works

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[–] icerunner_origin@startrek.website 17 points 1 day ago (1 children)

Tracked as CVE-2026-35414 (CVSS score of 8.1), the flaw is described as a mishandling of the authorized_keys principals option in certain scenarios involving certificate authorities (CA) that use comma characters.

According to Cyera, because of the bug, a comma in an SSH certificate principal name leads to OpenSSH access control bypass, allowing users to authenticate as root on a vulnerable server, as long as they have a valid certificate from a trusted CA.

[–] ptz@dubvee.org 8 points 1 day ago

I was about to dive into that, so thanks for the breakdown. My fear was someone could just add a comma to any SSH cert and gain remote root.