Ubuntu 4981-1: Squid vulnerabilities | LinuxSecurity.com

Advisories

==========================================================================
Ubuntu Security Notice USN-4981-1
June 03, 2021

squid, squid3 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in Squid.

Software Description:
- squid: Web proxy cache server
- squid3: Web proxy cache server

Details:

Joshua Rogers discovered that Squid incorrectly handled requests with the
urn: scheme. A remote attacker could possibly use this issue to cause
Squid to consume resources, leading to a denial of service.
(CVE-2021-28651)

Joshua Rogers discovered that Squid incorrectly handled requests to the
Cache Manager API. A remote attacker with access privileges could possibly
use this issue to cause Squid to consume resources, leading to a denial of
service. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 20.10,
and Ubuntu 21.04. (CVE-2021-28652)

Joshua Rogers discovered that Squid incorrectly handled certain response
headers. A remote attacker could possibly use this issue to cause Squid to
crash, resulting in a denial of service. This issue was only affected
Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-28662)

Joshua Rogers discovered that Squid incorrectly handled range request
processing. A remote attacker could possibly use this issue to cause Squid
to crash, resulting in a denial of service. (CVE-2021-31806,
CVE-2021-31807, CVE-2021-31808)

Joshua Rogers discovered that Squid incorrectly handled certain HTTP
responses. A remote attacker could possibly use this issue to cause Squid
to crash, resulting in a denial of service. (CVE-2021-33620)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 21.04:
  squid                           4.13-1ubuntu4.1

Ubuntu 20.10:
  squid                           4.13-1ubuntu2.2

Ubuntu 20.04 LTS:
  squid                           4.10-1ubuntu1.4

Ubuntu 18.04 LTS:
  squid                           3.5.27-1ubuntu1.11

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-4981-1
  CVE-2021-28651, CVE-2021-28652, CVE-2021-28662, CVE-2021-31806,
  CVE-2021-31807, CVE-2021-31808, CVE-2021-33620

Package Information:
  https://launchpad.net/ubuntu/+source/squid/4.13-1ubuntu4.1
  https://launchpad.net/ubuntu/+source/squid/4.13-1ubuntu2.2
  https://launchpad.net/ubuntu/+source/squid/4.10-1ubuntu1.4
  https://launchpad.net/ubuntu/+source/squid3/3.5.27-1ubuntu1.11

Ubuntu 4981-1: Squid vulnerabilities

June 3, 2021

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 - Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in Squid. Software Description: - squid: Web proxy cache server - squid3: Web proxy cache server Details: Joshua Rogers discovered that Squid incorrectly handled requests with the urn: scheme. A remote attacker could possibly use this issue to cause Squid to consume resources, leading to a denial of service. (CVE-2021-28651) Joshua Rogers discovered that Squid incorrectly handled requests to the Cache Manager API. A remote attacker with access privileges could possibly use this issue to cause Squid to consume resources, leading to a denial of service. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-28652) Joshua Rogers discovered that Squid incorrectly handled certain response headers. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service. This issue was only affected Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-28662) Joshua Rogers discovered that Squid incorrectly handled range request processing. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service. (CVE-2021-31806, CVE-2021-31807, CVE-2021-31808) Joshua Rogers discovered that Squid incorrectly handled certain HTTP responses. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service. (CVE-2021-33620)

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: squid 4.13-1ubuntu4.1 Ubuntu 20.10: squid 4.13-1ubuntu2.2 Ubuntu 20.04 LTS: squid 4.10-1ubuntu1.4 Ubuntu 18.04 LTS: squid 3.5.27-1ubuntu1.11 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4981-1

CVE-2021-28651, CVE-2021-28652, CVE-2021-28662, CVE-2021-31806,

CVE-2021-31807, CVE-2021-31808, CVE-2021-33620

Severity
Ubuntu Security Notice USN-4981-1

Package Information

https://launchpad.net/ubuntu/+source/squid/4.13-1ubuntu4.1 https://launchpad.net/ubuntu/+source/squid/4.13-1ubuntu2.2 https://launchpad.net/ubuntu/+source/squid/4.10-1ubuntu1.4 https://launchpad.net/ubuntu/+source/squid3/3.5.27-1ubuntu1.11

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