A Squid security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, and 22.04 LTS.

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Ubuntu Security Notice USN-5641-1
September 26, 2022

squid, squid3 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- 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:

Mikhail Evdokimov discovered that Squid incorrectly handled cache manager
ACLs. A remote attacker could possibly use this issue to obtain sensitive
information. This issue only affected Ubuntu 20.04 LTS, and Ubuntu 22.04
LTS. (CVE-2022-41317)

It was discovered that Squid incorrectly handled SSPI and SMB
authentication. A remote attacker could use this issue to cause Squid to
crash, resulting in a denial of service, or possibly obtain sensitive
information. (CVE-2022-41318)

Update instructions:

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

Ubuntu 22.04 LTS:
squid 5.2-1ubuntu4.2

Ubuntu 20.04 LTS:
squid 4.10-1ubuntu1.7

Ubuntu 18.04 LTS:
squid 3.5.27-1ubuntu1.14

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

References:
  https://ubuntu.com/security/notices/USN-5641-1
CVE-2022-41317, CVE-2022-41318

Package Information:
  https://launchpad.net/ubuntu/+source/squid/5.2-1ubuntu4.2
  https://launchpad.net/ubuntu/+source/squid/4.10-1ubuntu1.7
  https://launchpad.net/ubuntu/+source/squid3/3.5.27-1ubuntu1.14