ESB-2017.3188 - [Ubuntu] libxml2: Execute arbitrary code/commands - Remote with user interaction 2017-12-14

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.3188
                  libxml2 vulnerability patched in Ubuntu
                             14 December 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           libxml2
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-15412  

Original Bulletin: 
   https://www.ubuntu.com/usn/usn-3513-1
   https://www.ubuntu.com/usn/usn-3513-2

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running libxml2 check for an updated version of the software for 
         their operating system.
         
         This bulletin contains two (2) Ubuntu security advisories.

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USN-3513-1: libxml2 vulnerability
Ubuntu Security Notice USN-3513-1
13th 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 or run arbitrary code if it opened a
specially crafted file.

Software description

libxml2 - GNOME XML library
Details

It was discovered that libxml2 incorrecty handled certain files. 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+dfsg1-4ubuntu1.2
libxml2-utils 2.9.4+dfsg1-4ubuntu1.2
python-libxml2 2.9.4+dfsg1-4ubuntu1.2
python3-libxml2 2.9.4+dfsg1-4ubuntu1.2
Ubuntu 17.04:
libxml2 2.9.4+dfsg1-2.2ubuntu0.3
libxml2-utils 2.9.4+dfsg1-2.2ubuntu0.3
python-libxml2 2.9.4+dfsg1-2.2ubuntu0.3
python3-libxml2 2.9.4+dfsg1-2.2ubuntu0.3
Ubuntu 16.04 LTS:
libxml2 2.9.3+dfsg1-1ubuntu0.5
libxml2-utils 2.9.3+dfsg1-1ubuntu0.5
python-libxml2 2.9.3+dfsg1-1ubuntu0.5
Ubuntu 14.04 LTS:
libxml2 2.9.1+dfsg1-3ubuntu4.12
libxml2-utils 2.9.1+dfsg1-3ubuntu4.12
python-libxml2 2.9.1+dfsg1-3ubuntu4.12

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

CVE-2017-15412

- --------------------------------------------------------------------------------

USN-3513-2: libxml2 vulnerability
Ubuntu Security Notice USN-3513-2
13th December, 2017

libxml2 vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

Ubuntu 12.04 LTS
Summary

libxml2 could be made to crash or run arbitrary code if it opened a
specially crafted file.

Software description

libxml2 - GNOME XML library
Details

USN-3513-1 fixed a vulnerability in libxml2. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

It was discovered that libxml2 incorrecty handled certain files. 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 12.04 LTS:
libxml2 2.7.8.dfsg-5.1ubuntu4.20
libxml2-utils 2.7.8.dfsg-5.1ubuntu4.20
python-libxml2 2.7.8.dfsg-5.1ubuntu4.20

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

CVE-2017-15412

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