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Gentoo Linux Security Advisory GLSA 202105-14
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https://security.gentoo.org/
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Severity: Normal
Title: Squid: Multiple vulnerabilities
Date: May 26, 2021
Bugs: #775194, #789309
ID: 202105-14

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Synopsis
========

Multiple vulnerabilities have been found in Squid, the worst of which
could result in a Denial of Service condition.

Background
==========

Squid is a full-featured Web proxy cache designed to run on Unix
systems. It supports proxying and caching of HTTP, FTP, and other URLs,
as well as SSL support, cache hierarchies, transparent caching, access
control lists and many other features.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-proxy/squid < 4.15 >= 4.15

Description
===========

Multiple vulnerabilities have been discovered in Squid. Please review
the CVE identifiers referenced below for details.

Impact
======

A remote attacker could send a specially crafted request, possibly
resulting in a Denial of Service condition or information leak.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Squid users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-proxy/squid-4.15"

References
==========

[ 1 ] CVE-2020-25097
https://nvd.nist.gov/vuln/detail/CVE-2020-25097
[ 2 ] CVE-2021-28116
https://nvd.nist.gov/vuln/detail/CVE-2021-28116
[ 3 ] CVE-2021-28651
https://nvd.nist.gov/vuln/detail/CVE-2021-28651
[ 4 ] CVE-2021-28652
https://nvd.nist.gov/vuln/detail/CVE-2021-28652
[ 5 ] CVE-2021-28662
https://nvd.nist.gov/vuln/detail/CVE-2021-28662
[ 6 ] CVE-2021-31806
https://nvd.nist.gov/vuln/detail/CVE-2021-31806
[ 7 ] CVE-2021-31807
https://nvd.nist.gov/vuln/detail/CVE-2021-31807
[ 8 ] CVE-2021-31808
https://nvd.nist.gov/vuln/detail/CVE-2021-31808

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202105-14

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

License
=======

Copyright 2021 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5


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