USN-4065-1: Squid vulnerabilities

squid, squid3 vulnerabilities

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

Ubuntu 19.04
Ubuntu 18.04 LTS
Ubuntu 16.04 LTS

Summary

Several security issues were fixed in Squid.

Software Description

squid – Web proxy cache server
squid3 – Web proxy cache server

Details

It was discovered that Squid incorrectly handled Digest authentication. A
remote attacker could possibly use this issue to cause Squid to crash,
resulting in a denial of service. (CVE-2019-12525)

It was discovered that Squid incorrectly handled Basic authentication. A
remote attacker could use this issue to cause Squid to crash, resulting in
a denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 19.04. (CVE-2019-12527)

It was discovered that Squid incorrectly handled Basic authentication. A
remote attacker could possibly use this issue to cause Squid to crash,
resulting in a denial of service. (CVE-2019-12529)

Update instructions

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

Ubuntu 19.04: squid – 4.4-1ubuntu2.2
Ubuntu 18.04 LTS: squid3 – 3.5.27-1ubuntu1.3
Ubuntu 16.04 LTS: squid3 – 3.5.12-1ubuntu7.8

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

Source: USN-4065-1: Squid vulnerabilities

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