USN-3235-1: libxml2 vulnerabilities
Ubuntu Security Notice USN-3235-1
16th March, 2017
libxml2 vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
Several security issues were fixed in libxml2.
Software description
- libxml2
– GNOME XML library
Details
It was discovered that libxml2 incorrectly handled format strings. 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 16.04 LTS. (CVE-2016-4448)
It was 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 cause libxml2 to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2016-4658)
Nick Wellnhofer 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 cause libxml2 to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2016-5131)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- 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
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.
References
Source: USN-3235-1: libxml2 vulnerabilities
