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[SECURITY] [DLA 2920-1] varnish security update

Debian LTS Advisory DLA-2920-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                      Markus Koschany
February 14, 2022                             https://wiki.debian.org/LTS

Package        : varnish
Version        : 5.0.0-7+deb9u3
CVE ID         : CVE-2022-23959
Debian Bug     : 1004433

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

We recommend that you upgrade your varnish packages.

For the detailed security status of varnish please refer to
its security tracker page at:

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

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