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Ubuntu Security Notice USN-2834-1

Ubuntu Security Notice USN-2834-1
Posted Dec 14, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2834-1 - 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-2015-7497,CVE-2015-7498, CVE-2015-7499, 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. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2015-5312, CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, CVE-2015-7500, CVE-2015-8241, CVE-2015-8242, CVE-2015-8317
MD5 | c0e36284260b1ac3eeb2b41ebe461ac7

Ubuntu Security Notice USN-2834-1

Change Mirror Download
============================================================================
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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