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Vulnerability of Squid: two vulnerabilities

Synthesis of the vulnerability 

An attacker can use several vulnerabilities of Squid.
Impacted systems: Fedora, openSUSE Leap, RHEL, Squid, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this alert: 2/4.
Number of vulnerabilities in this bulletin: 2.
Creation date: 04/04/2016.
Références of this alert: CERTFR-2016-AVI-112, CVE-2016-3947, CVE-2016-3948, FEDORA-2016-95edf19d8a, FEDORA-2016-b3b9407940, openSUSE-SU-2016:2081-1, RHSA-2016:2600-02, SQUID-2016:3, SQUID-2016:4, SUSE-SU-2016:1996-1, SUSE-SU-2016:2089-1, USN-2995-1, USN-3557-1, VIGILANCE-VUL-19289.

Description of the vulnerability 

Several vulnerabilities were announced in Squid.

An attacker can setup a malicious web server, which answers with large ICMPv6 data, to force the Pinger to stop, or to write a memory fragment in the log with root privileges. [severity:2/4; CVE-2016-3947, SQUID-2016:3]

An attacker can force an assertion error with an HTTP Vary header, in order to trigger a denial of service. [severity:2/4; CVE-2016-3948, SQUID-2016:4]
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This vulnerability note impacts software or systems such as Fedora, openSUSE Leap, RHEL, Squid, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity vulnerability is medium.

The trust level is of type confirmed by the editor, with an origin of internet server.

This bulletin is about 2 vulnerabilities.

An attacker with a expert ability can exploit this computer threat note.

Solutions for this threat 

Squid: version 3.5.16.
The version 3.5.16 is fixed:
  http://www.squid-cache.org/

Fedora: new squid packages.
New packages are available:
  Fedora 23: squid 3.5.10-4.fc23
  Fedora 24: squid 3.5.19-2.fc24

openSUSE Leap 42.1: new squid packages.
New packages are available:
  openSUSE Leap 42.1: squid 3.3.14-6.1

RHEL 7: new squid packages.
New packages are available:
  RHEL 7: squid 3.5.20-2.el7

SUSE LE 11 SP4: new squid3 packages.
New packages are available:
  SUSE LE 11 SP4: squid3 3.1.23-8.16.27.1
  SUSE LE 11 SP4: squid3 3.1.23-8.16.30.1
  SUSE LE 11 SP4: squid3 3.1.23-8.16.27.1

Ubuntu: new squid3 packages (06/02/2018).
New packages are available:
  Ubuntu 17.10: squid3 3.5.23-5ubuntu1.1
  Ubuntu 16.04 LTS: squid3 3.5.12-1ubuntu7.5
  Ubuntu 14.04 LTS: squid3 3.3.8-1ubuntu6.11

Ubuntu: new squid3 packages (10/06/2016).
New packages are available:
  Ubuntu 16.04 LTS: squid3 3.5.12-1ubuntu7.2
  Ubuntu 15.10: squid3 3.3.8-1ubuntu16.3
  Ubuntu 14.04 LTS: squid3 3.3.8-1ubuntu6.8
  Ubuntu 12.04 LTS: squid3 3.1.19-1ubuntu3.12.04.7
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