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Vulnerability of libxml2: three vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of libxml2.
Severity of this threat: 2/4.
Number of vulnerabilities in this bulletin: 3.
Creation date: 25/05/2016.
Références of this weakness: 1989337, 1991909, 1991910, 1991911, 1991913, 1991997, CERTFR-2017-AVI-012, cpujan2018, CVE-2016-4447, CVE-2016-4448, CVE-2016-4449, DLA-503-1, DSA-3593-1, FEDORA-2017-a3a47973eb, FEDORA-2017-be8574d593, HT206902, HT206903, JSA10770, JSA10916, K24322529, K41103561, openSUSE-SU-2016:1595-1, RHSA-2016:1292-01, SA129, SB10170, SOL41103561, SPL-119440, SPL-121159, SPL-123095, SSA:2016-148-01, SUSE-SU-2016:1538-1, SUSE-SU-2016:1604-1, TNS-2017-03, USN-2994-1, USN-3235-1, VIGILANCE-VUL-19694.

Description of the vulnerability

Several vulnerabilities were announced in libxml2.

An attacker can force a read at an invalid address via xmlParseName, in order to trigger a denial of service, or to obtain sensitive information. [severity:1/4; CVE-2016-4447]

An attacker can use a format string attack, in order to trigger a denial of service, and possibly to run code. [severity:2/4; CVE-2016-4448]

An attacker can generate a memory corruption via Entities Content, in order to trigger a denial of service, and possibly to run code. [severity:2/4; CVE-2016-4449]
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This security announce impacts software or systems such as iOS by Apple, iPhone, Mac OS X, Blue Coat CAS, ProxyAV, ProxyRA, ProxySG par Blue Coat, SGOS by Blue Coat, Debian, BIG-IP Hardware, TMOS, Fedora, Junos OS, Junos Space, libxml, McAfee Web Gateway, openSUSE Leap, Oracle Communications, RHEL, Slackware, Splunk Enterprise, SLES, Nessus, Ubuntu.

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

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

This bulletin is about 3 vulnerabilities.

An attacker with a expert ability can exploit this computer vulnerability announce.

Solutions for this threat

libxml2: version 2.9.4.
The version 2.9.4 is fixed:
  http://xmlsoft.org/downloads.html

Apple iOS: version 9.3.3.
The version 9.3.3 is fixed:
  http://www.apple.com/support/downloads/

Apple Mac OS X: version 10.11.6.
The version 10.11.6 is fixed:
  http://www.apple.com/support/downloads/

Blue Coat: solution for libxml2.
The solution is indicated in information sources.

Debian 7: new libxml2 packages.
New packages are available:
  Debian 7: libxml2 2.8.0+dfsg1-7+wheezy6

Debian: new libxml2 packages.
New packages are available:
  Debian 8: libxml2 2.9.1+dfsg1-5+deb8u2

F5 BIG-IP: solution for libxml2.
The solution is indicated in information sources.

Fedora: new libxml2 packages (19/04/2017).
New packages are available:
  Fedora 24: libxml2 2.9.4-2.fc24
  Fedora 25: libxml2 2.9.4-2.fc25

IBM BigFix Compliance Analytics: version 1.9.
The version 1.9 is fixed.

Junos OS: fixed versions for libxml2.
Fixed versions are indicated in information sources.

Junos Space: version 16.1R1.
The version 16.1R1 is fixed:
  https://www.juniper.net/

McAfee Web Gateway: versions 7.5.2.11 and 7.6.2.4.
Versions 7.5.2.11 and 7.6.2.4 are fixed:
  https://contentsecurity.mcafee.com/software_mwg7_download

openSUSE Leap 42.1: new libxml2 packages.
New packages are available:
  openSUSE Leap 42.1: libxml2 2-2.9.1-19.1

Oracle Communications: CPU of January 2018.
A Critical Patch Update is available:
  http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html

RHEL: new libxml2 packages.
New packages are available:
  RHEL 6: libxml2 2.7.6-21.el6_8.1
  RHEL 7: libxml2 2.9.1-6.el7_2.3

Slackware: new libxml2 packages.
New packages are available:
  Slackware 14.0: libxml2 2.9.4-*-1_slack14.0
  Slackware 14.1: libxml2 2.9.4-*-1_slack14.1

Splunk Enterprise: versions 6.4.2, 6.3.6, 6.2.11, 6.1.11, 6.0.12 and 5.0.16.
Versions 6.4.2, 6.3.6, 6.2.11, 6.1.11, 6.0.12 and 5.0.16 are fixed:
  http://www.splunk.com/en_us/download.html

SUSE LE: new libxml2 packages.
New packages are available:
  SUSE LE 12 SP1: libxml2 2-2.9.1-24.1
  SUSE LE 11 SP4: libxml2 2.7.6-0.44.1
  SUSE LE 11 SP3: libxml2 2.7.6-0.44.1
  SUSE LE 11 SP2: libxml2 2.7.6-0.44.1

Tenable Nessus: version 6.10.
The version 6.10 is fixed.

Ubuntu: new libxml2 packages (07/06/2016).
New packages are available:
  Ubuntu 16.04 LTS: libxml2 2.9.3+dfsg1-1ubuntu0.1
  Ubuntu 15.10: libxml2 2.9.2+zdfsg1-4ubuntu0.4
  Ubuntu 14.04 LTS: libxml2 2.9.1+dfsg1-3ubuntu4.8
  Ubuntu 12.04 LTS: libxml2 2.7.8.dfsg-5.1ubuntu4.15

Ubuntu: new libxml2 packages (16/03/2017).
New packages are available:
  Ubuntu 16.10: libxml2 2.9.4+dfsg1-2ubuntu0.1
  Ubuntu 16.04 LTS: libxml2 2.9.3+dfsg1-1ubuntu0.2
  Ubuntu 14.04 LTS: libxml2 2.9.1+dfsg1-3ubuntu4.9
  Ubuntu 12.04 LTS: libxml2 2.7.8.dfsg-5.1ubuntu4.17
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