PT-2025-26586 · Sslh+3 · Sslh+3
CVSS v4.0
9.3
Critical
| Vector | AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/S:N/AU:Y/R:U/V:C/RE:M/U:Amber |
Name of the Vulnerable Software and Affected Versions
sslh versions prior to 2.2.2
Description
An improper link resolution issue, known as link following, exists in sslh, a protocol multiplexor used to share SSH and HTTPS on the same port. The software fails to properly handle symbolic links when writing its PID file, which could allow a local attacker to overwrite arbitrary files.
Recommendations
Update sslh to version 2.2.2 or later.
For Debian 11 bullseye, update sslh to version 1.20-1+deb11u1.
For Ubuntu, update sslh to version 1.20-1+deb11u1build0.20.04.1.
Exploit
Fix
Link Following
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Ubuntu
Sslh