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