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Debian 11: DLA-4238-1 important: update for sslh available now

debian lts
Calendar Grey July 9, 2025
Dist Debian Esm H88
Important patch released for sslh in Debian LTS tackles a vulnerability impacting the shared usage of SSH and HTTPS.
It was discovered that there was a so-called "link following" vulnerability in sslh, a protocol multiplexor often used to share SSH and HTTPS on the same port
Topics%20covered

Topics Covered

security advisory debian important sslh link following protocol multiplexor

Summary

For Debian 11 bullseye, this problem has been fixed in version
1.20-1+deb11u1.

We recommend that you upgrade your sslh packages.

For the detailed security status of sslh please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/sslh

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS



Severity
important
Lowest
Low
Medium
High
Critical

Package: sslh
Version: 1.20-1+deb11u1
CVE ID: CVE-2025-52936
Debian Bug: 1108284

Topics%20covered

Topics Covered

security advisory debian important sslh link following protocol multiplexor

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