USN-3504-1: libxml2 vulnerability
Ubuntu Security Notice USN-3504-1
5th December, 2017
libxml2 vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 17.10
- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary
libxml2 could be made to crash if it opened a specially crafted
file.
Software description
- libxml2
– GNOME XML library
Details
Wei Lei discovered that libxml2 incorrecty handled certain parameter
entities. An attacker could use this issue with specially constructed XML
data to cause libxml2 to consume resources, leading to a denial of service.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 17.10:
-
libxml2
2.9.4+dfsg1-4ubuntu1.1
-
libxml2-utils
2.9.4+dfsg1-4ubuntu1.1
-
python-libxml2
2.9.4+dfsg1-4ubuntu1.1
-
python3-libxml2
2.9.4+dfsg1-4ubuntu1.1
- Ubuntu 17.04:
-
libxml2
2.9.4+dfsg1-2.2ubuntu0.2
-
libxml2-utils
2.9.4+dfsg1-2.2ubuntu0.2
-
python-libxml2
2.9.4+dfsg1-2.2ubuntu0.2
-
python3-libxml2
2.9.4+dfsg1-2.2ubuntu0.2
- Ubuntu 16.04 LTS:
-
libxml2
2.9.3+dfsg1-1ubuntu0.4
-
libxml2-utils
2.9.3+dfsg1-1ubuntu0.4
-
python-libxml2
2.9.3+dfsg1-1ubuntu0.4
- Ubuntu 14.04 LTS:
-
libxml2
2.9.1+dfsg1-3ubuntu4.11
-
libxml2-utils
2.9.1+dfsg1-3ubuntu4.11
-
python-libxml2
2.9.1+dfsg1-3ubuntu4.11
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
Source: USN-3504-1: libxml2 vulnerability
