Ubuntu Security Notice USN-2812-1
16th November, 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
Several security issues were fixed in libxml2.
Software description
- libxml2
– GNOME XML library
Details
Florian Weimer discovered that libxml2 incorrectly handled certain XML
data. If a user or automated system were tricked into opening a specially
crafted document, an attacker could possibly cause resource consumption,
resulting in a denial of service. This issue only affected
Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 15.04. (CVE-2015-1819)
Michal Zalewski discovered that libxml2 incorrectly handled certain XML
data. 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 affected
Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 15.04. (CVE-2015-7941)
Kostya Serebryany discovered that libxml2 incorrectly handled certain XML
data. 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, or possibly execute arbitrary code.
(CVE-2015-7942)
Gustavo Grieco discovered that libxml2 incorrectly handled certain XML
data. 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 affected
Ubuntu 14.04 LTS. (CVE-2015-8035)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.10:
-
libxml2
2.9.2+zdfsg1-4ubuntu0.1
- Ubuntu 15.04:
-
libxml2
2.9.2+dfsg1-3ubuntu0.1
- Ubuntu 14.04 LTS:
-
libxml2
2.9.1+dfsg1-3ubuntu4.5
- Ubuntu 12.04 LTS:
-
libxml2
2.7.8.dfsg-5.1ubuntu4.12
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.