Debian Security Advisory

DLA-2598-1 squid3 -- LTS security update

Date Reported:
19 Mar 2021
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 985068.
In Mitre's CVE dictionary: CVE-2020-25097.
More information:

Due to improper input validation, Squid is vulnerable to an HTTP Request Smuggling attack.

This problem allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by Squid security controls.

For Debian 9 stretch, this problem has been fixed in version 3.5.23-5+deb9u6.

We recommend that you upgrade your squid3 packages.

For the detailed security status of squid3 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: