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==========================================================================
Ubuntu Security Notice USN-2834-1
December 14, 2015
libxml2 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary:
libxml2 could be made to crash if it opened a specially crafted file.
Software Description:
- libxml2: GNOME XML library
Details:
Kostya Serebryany discovered that libxml2 incorrectly handled certain
malformed documents. If a user or automated system were tricked into
opening a specially crafted document, an attacker could possibly cause
libxml2 to crash, resulting in a denial of service. (CVE-2015-5312,
CVE-2015-7497, CVE-2015-7498, CVE-2015-7499,CVE-2015-7500)
Hugh Davenport discovered that libxml2 incorrectly handled certain
malformed documents. If a user or automated system were tricked into
opening a specially crafted document, an attacker could possibly cause
libxml2 to crash, resulting in a denial of service. (CVE-2015-8241,
CVE-2015-8242)
Hanno Boeck discovered that libxml2 incorrectly handled certain
malformed documents. If a user or automated system were tricked into
opening a specially crafted document, an attacker could possibly cause
libxml2 to crash, resulting in a denial of service. This issue only applied
to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 15.04. (CVE-2015-8317)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 15.10:
libxml2 2.9.2+zdfsg1-4ubuntu0.2
Ubuntu 15.04:
libxml2 2.9.2+dfsg1-3ubuntu0.2
Ubuntu 14.04 LTS:
libxml2 2.9.1+dfsg1-3ubuntu4.6
Ubuntu 12.04 LTS:
libxml2 2.7.8.dfsg-5.1ubuntu4.13
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2834-1
CVE-2015-5312, CVE-2015-7497, CVE-2015-7498, CVE-2015-7499,
CVE-2015-7500, CVE-2015-8241, CVE-2015-8242, CVE-2015-8317
Package Information:
https://launchpad.net/ubuntu/+source/libxml2/2.9.2+zdfsg1-4ubuntu0.2
https://launchpad.net/ubuntu/+source/libxml2/2.9.2+dfsg1-3ubuntu0.2
https://launchpad.net/ubuntu/+source/libxml2/2.9.1+dfsg1-3ubuntu4.6
https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-5.1ubuntu4.13
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