==========================================================================
Ubuntu Security Notice USN-2995-1
June 09, 2016
squid3 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.04 LTS
– Ubuntu 15.10
– Ubuntu 14.04 LTS
– Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in Squid.
Software Description:
– squid3: Web proxy cache server
Details:
Yuriy M. Kaminskiy discovered that the Squid pinger utility incorrectly
handled certain ICMPv6 packets. A remote attacker could use this issue to
cause Squid to crash, resulting in a denial of service, or possibly cause
Squid to leak information into log files. (CVE-2016-3947)
Yuriy M. Kaminskiy discovered that the Squid cachemgr.cgi tool incorrectly
handled certain crafted data. A remote attacker could use this issue to
cause Squid to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2016-4051)
It was discovered that Squid incorrectly handled certain Edge Side Includes
(ESI) responses. A remote attacker could possibly use this issue to cause
Squid to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2016-4052, CVE-2016-4053, CVE-2016-4054)
Jianjun Chen discovered that Squid did not correctly ignore the Host header
when absolute-URI is provided. A remote attacker could possibly use this
issue to conduct cache-poisoning attacks. This issue only affected Ubuntu
14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2016-4553)
Jianjun Chen discovered that Squid incorrectly handled certain HTTP Host
headers. A remote attacker could possibly use this issue to conduct
cache-poisoning attacks. (CVE-2016-4554)
It was discovered that Squid incorrectly handled certain Edge Side Includes
(ESI) responses. A remote attacker could possibly use this issue to cause
Squid to crash, resulting in a denial of service. (CVE-2016-4555,
CVE-2016-4556)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
squid-cgi 3.5.12-1ubuntu7.2
squid3 3.5.12-1ubuntu7.2
Ubuntu 15.10:
squid-cgi 3.3.8-1ubuntu16.3
squid3 3.3.8-1ubuntu16.3
Ubuntu 14.04 LTS:
squid-cgi 3.3.8-1ubuntu6.8
squid3 3.3.8-1ubuntu6.8
Ubuntu 12.04 LTS:
squid-cgi 3.1.19-1ubuntu3.12.04.7
squid3 3.1.19-1ubuntu3.12.04.7
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2995-1
CVE-2016-3947, CVE-2016-4051, CVE-2016-4052, CVE-2016-4053,
CVE-2016-4054, CVE-2016-4553, CVE-2016-4554, CVE-2016-4555,
CVE-2016-4556
Package Information:
https://launchpad.net/ubuntu/+source/squid3/3.5.12-1ubuntu7.2
https://launchpad.net/ubuntu/+source/squid3/3.3.8-1ubuntu16.3
https://launchpad.net/ubuntu/+source/squid3/3.3.8-1ubuntu6.8
https://launchpad.net/ubuntu/+source/squid3/3.1.19-1ubuntu3.12.04.7
—–BEGIN PGP SIGNATURE—–
Version: GnuPG v2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=RhMk
—–END PGP SIGNATURE—–
—
