[USN-4065-2] Squid vulnerabilities

[Leonidas S. Barbosa]

==========================================================================
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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