==========================================================================
Ubuntu Security Notice USN-4065-1
July 18, 2019

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

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

References:
https://usn.ubuntu.com/4065-1
CVE-2019-12525, CVE-2019-12527, CVE-2019-12529

Package Information:
https://launchpad.net/ubuntu/+source/squid/4.4-1ubuntu2.2
https://launchpad.net/ubuntu/+source/squid3/3.5.27-1ubuntu1.3
https://launchpad.net/ubuntu/+source/squid3/3.5.12-1ubuntu7.8

—–BEGIN PGP SIGNATURE—–
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=alEb
—–END PGP SIGNATURE—–
—