Debian Long Term Support / LTS Security Information / 2022 / Security Information -- DLA-2920-1 varnish

Debian Security Advisory

DLA-2920-1 varnish -- LTS security update

Date Reported:

14 Feb 2022

Affected Packages:

varnish

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 1004433.
In Mitre's CVE dictionary: CVE-2022-23959.

More information:

James Kettle discovered that a request smuggling attack can be performed on HTTP/1 connections on Varnish servers, high-performance web accelerators. The smuggled request would be treated as an additional request by the Varnish server which may lead to information disclosure and cache poisoning.

For Debian 9 stretch, this problem has been fixed in version 5.0.0-7+deb9u3.

We recommend that you upgrade your varnish packages.

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

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