==========================================================================
Ubuntu Security Notice USN-3504-2
December 05, 2017
libxml2 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 12.04 ESM
Summary:
curl could be made to crash if it received specially crafted
input.
Software Description:
– libxml2: GNOME XML library
Details:
USN-3504-1 fixed a vulnerability in libxml2. This update provides
the corresponding update for Ubuntu 12.04 ESM.
Original advisory 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 versions:
Ubuntu 12.04 ESM:
libxml2 2.7.8.dfsg-5.1ubuntu4.19
libxml2-utils 2.7.8.dfsg-5.1ubuntu4.19
python-libxml2 2.7.8.dfsg-5.1ubuntu4.19
In general, a standard system update will make all the necessary
changes.
References:
https://www.ubuntu.com/usn/usn-3504-2
https://www.ubuntu.com/usn/usn-3504-1
CVE-2017-16932
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==========================================================================
Ubuntu Security Notice USN-3504-1
December 05, 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 versions:
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
In general, a standard system update will make all the necessary
changes.
References:
https://www.ubuntu.com/usn/usn-3504-1
CVE-2017-16932
Package Information:
https://launchpad.net/ubuntu/+source/libxml2/2.9.4+dfsg1-4ubuntu1.1
https://launchpad.net/ubuntu/+source/libxml2/2.9.4+dfsg1-2.2ubuntu0.2
https://launchpad.net/ubuntu/+source/libxml2/2.9.3+dfsg1-1ubuntu0.4
https://launchpad.net/ubuntu/+source/libxml2/2.9.1+dfsg1-3ubuntu4.11
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