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Ubuntu Security Notice USN-2995-1

Ubuntu Security Notice USN-2995-1
Posted Jun 9, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2995-1 - 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. 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. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, cgi
systems | linux, ubuntu
advisories | 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
MD5 | bb2147c6eb5504215df16972765f0e77

Ubuntu Security Notice USN-2995-1

Change Mirror Download
From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <5759AA42.1010302@canonical.com>
Subject: [USN-2995-1] Squid vulnerabilities




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




--mAn5qn9mx8WnmdWBxh1M0PiqCejVXuEVX
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