1. Ubuntu Security Notices
  2. USN-3075-1

USN-3075-1: Imlib2 vulnerabilities

Publication date

9 September 2016

Overview

Several security issues were fixed in Imlib2.

Releases

Packages

  • imlib2 - Image manipulation and rendering library

Details

Jakub Wilk discovered an out of bounds read in the GIF loader
implementation in Imlib2. An attacker could use this to cause a
denial of service (application crash) or possibly obtain sensitive
information. (CVE-2016-3994)

Yuriy M. Kaminskiy discovered an off-by-one error when handling
coordinates in Imlib2. An attacker could use this to cause a denial of
service (application crash). (CVE-2016-3993)

Yuriy M. Kaminskiy discovered that integer overflows existed in Imlib2
when handling images with large dimensions. An attacker could use
this to cause a denial of service (memory exhaustion or application
crash). (CVE-2014-9771, CVE-2016-4024)

Kevin Ryde discovered that the ellipse drawing code in Imlib2 would
attempt to divide by zero when drawing a 2x1 ellipse. An...

Jakub Wilk discovered an out of bounds read in the GIF loader
implementation in Imlib2. An attacker could use this to cause a
denial of service (application crash) or possibly obtain sensitive
information. (CVE-2016-3994)

Yuriy M. Kaminskiy discovered an off-by-one error when handling
coordinates in Imlib2. An attacker could use this to cause a denial of
service (application crash). (CVE-2016-3993)

Yuriy M. Kaminskiy discovered that integer overflows existed in Imlib2
when handling images with large dimensions. An attacker could use
this to cause a denial of service (memory exhaustion or application
crash). (CVE-2014-9771, CVE-2016-4024)

Kevin Ryde discovered that the ellipse drawing code in Imlib2 would
attempt to divide by zero when drawing a 2x1 ellipse. An attacker
could use this to cause a denial of service (application crash).
(CVE-2011-5326)

It was discovered that Imlib2 did not properly handled GIF images
without colormaps. An attacker could use this to cause a denial of
service (application crash). This issue only affected Ubuntu 12.04 LTS
and Ubuntu 14.04 LTS. (CVE-2014-9762)

It was discovered that Imlib2 did not properly handle some PNM images,
leading to a division by zero. An attacker could use this to cause
a denial of service (application crash). This issue only affected
Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-9763)

It was discovered that Imlib2 did not properly handle error conditions
when loading some GIF images. An attacker could use this to cause
a denial of service (application crash). This issue only affected
Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-9764)

Update instructions

After a standard system update you will need to restart applications that make use of Imlib2 to 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
16.04 xenial libimlib2 –  1.4.7-1ubuntu0.1
14.04 trusty libimlib2 –  1.4.6-2ubuntu0.1
12.04 precise libimlib2 –  1.4.4-1ubuntu0.1

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References

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