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Ubuntu Security Notice USN-4065-2
July 22, 2019

squid3 vulnerabilities
==========================================================================

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

– Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in Squid.

Software Description:
– squid3: Web proxy cache server

Details:

USN-4065-1 fixed several vulnerabilities in Squid. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory 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 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 12.04 ESM:
squid3 3.1.19-1ubuntu3.12.04.10

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

References:
https://usn.ubuntu.com/4065-2
https://usn.ubuntu.com/4065-1
CVE-2019-12525, CVE-2019-12529
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