USN-3739-1: libxml2 vulnerabilities

Releases

• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• libxml2 - GNOME XML library

Details

Matias Brutti discovered that libxml2 incorrectly handled certain XML files.
An attacker could possibly use this issue to expose sensitive information.
(CVE-2016-9318)

It was discovered that libxml2 incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 18.04 LTS. (CVE-2017-16932)

It was discovered that libxml2 incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2017-18258, CVE-2018-14404, CVE-2018-14567)

Update instructions

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

Ubuntu 18.04

• libxml2 - 2.9.4+dfsg1-6.1ubuntu1.2
• libxml2-utils - 2.9.4+dfsg1-6.1ubuntu1.2
• python-libxml2 - 2.9.4+dfsg1-6.1ubuntu1.2
• python3-libxml2 - 2.9.4+dfsg1-6.1ubuntu1.2

Ubuntu 16.04

• libxml2 - 2.9.3+dfsg1-1ubuntu0.6
• libxml2-utils - 2.9.3+dfsg1-1ubuntu0.6
• python-libxml2 - 2.9.3+dfsg1-1ubuntu0.6

Ubuntu 14.04

• libxml2 - 2.9.1+dfsg1-3ubuntu4.13
• libxml2-utils - 2.9.1+dfsg1-3ubuntu4.13
• python-libxml2 - 2.9.1+dfsg1-3ubuntu4.13

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

References

• CVE-2016-9318
• CVE-2017-16932
• CVE-2017-18258
• CVE-2018-14404
• CVE-2018-14567

Related notices

• USN-3739-2: libxml2, libxml2-utils, python-libxml2
• USN-3504-2: libxml2, libxml2-utils, python-libxml2
• USN-3504-1: libxml2-udeb, python-libxml2, libxml2, libxml2-doc, libxml2-utils, python3-libxml2, libxml2-dev