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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --mAn5qn9mx8WnmdWBxh1M0PiqCejVXuEVX Content-Type: multipart/mixed; boundary="xOCSosv1RhKF7uvrBc0BkrVtCP7gGbPUq" 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
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========================================================================== 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
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