1. Ubuntu Security Notices
  2. USN-3504-1

USN-3504-1: libxml2 vulnerability

Publication date

5 December 2017

Overview

libxml2 could be made to crash if it opened a specially crafted file.

Releases

Packages

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.

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

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
17.10 artful 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
17.04 zesty 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
16.04 xenial libxml2 –  2.9.3+dfsg1-1ubuntu0.4
libxml2-utils –  2.9.3+dfsg1-1ubuntu0.4
python-libxml2 –  2.9.3+dfsg1-1ubuntu0.4
14.04 trusty libxml2 –  2.9.1+dfsg1-3ubuntu4.11
libxml2-utils –  2.9.1+dfsg1-3ubuntu4.11
python-libxml2 –  2.9.1+dfsg1-3ubuntu4.11

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References

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