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Ubuntu 18.04 LTS USN-3739-1 Critical Libxml2 DoS Issues

ubuntu
Calendar Grey August 14, 2018
Dist Ubuntu Esm H88
In September 2020, vulnerabilities in OpenSSL were addressed, impacting several Debian versions and carrying different levels of threat.
Several security issues were fixed in libxml2.

Summary

Several security issues were fixed in libxml2.

Software Description:

- 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)

Topics%20covered

Topics Covered

security advisory software update critical risk DoS Ubuntu information exposure libxml2

Update Instructions

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

Ubuntu 18.04 LTS:
  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 LTS:
  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 LTS:
  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

  https://ubuntu.com/security/notices/USN-3739-1

  CVE-2016-9318, CVE-2017-16932, CVE-2017-18258, CVE-2018-14404,

  CVE-2018-14567

Severity
critical
Lowest
Low
Medium
High
Critical

August 14, 2018

Topics%20covered

Topics Covered

security advisory software update critical risk DoS Ubuntu information exposure libxml2

Package Information

  https://launchpad.net/ubuntu/+source/libxml2/2.9.4+dfsg1-6.1ubuntu1.2
  https://launchpad.net/ubuntu/+source/libxml2/2.9.3+dfsg1-1ubuntu0.6
  https://launchpad.net/ubuntu/+source/libxml2/2.9.1+dfsg1-3ubuntu4.13

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