Ubuntu Security Notice USN-3086-1

21st September, 2016

irssi vulnerabilities

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

• Ubuntu 16.04 LTS

Summary

Irssi could be made to crash if it received specially crafted network
traffic.

Software description

• irssi
  – terminal based IRC client

Details

Gabriel Campana and Adrien Guinet discovered that the format parsing code
in Irssi did not properly verify 24bit color codes. A remote attacker could
use this to cause a denial of service (application crash). (CVE-2016-7044)

Gabriel Campana and Adrien Guinet discovered that a buffer overflow existed
in the format parsing code in Irssi. A remote attacker could use this to
cause a denial of service (application crash). (CVE-2016-7045)

Update instructions

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

Ubuntu 16.04 LTS:

irssi

0.8.19-1ubuntu1.2

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart Irssi to make
all the necessary changes.

References

CVE-2016-7044,

CVE-2016-7045

Ubuntu Security Notice USN-3085-1

21st September, 2016

gdk-pixbuf vulnerabilities

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

• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

GDK-PixBuf could be made to crash or run programs as your login if it opened a specially crafted file.

Software description

• gdk-pixbuf
  – GDK-Pixbuf library

Details

It was discovered that the GDK-PixBuf library did not properly handle specially
crafted bmp images, leading to a heap-based buffer overflow. If a user or
automated system were tricked into opening a specially crafted bmp file, a
remote attacker could use this flaw to cause GDK-PixBuf to crash, resulting
in a denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-7552)

It was discovered that the GDK-PixBuf library contained an integer overflow
when handling certain images. If a user or automated system were tricked into
opening a crafted image file, a remote attacker could use this flaw to cause
GDK-PixBuf to crash, resulting in a denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-8875)

Franco Costantini discovered that the GDK-PixBuf library contained an
out-of-bounds write error when parsing an ico file. If a user or automated
system were tricked into opening a crafted ico file, a remote attacker could
use this flaw to cause GDK-PixBuf to crash, resulting in a denial of service.
This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-6352)

Update instructions

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

Ubuntu 16.04 LTS:

libgdk-pixbuf2.0-0

2.32.2-1ubuntu1.2

Ubuntu 14.04 LTS:

libgdk-pixbuf2.0-0

2.30.7-0ubuntu1.6

Ubuntu 12.04 LTS:

libgdk-pixbuf2.0-0

2.26.1-1ubuntu1.5

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart your session to make
all the necessary changes.

References

CVE-2015-7552,

CVE-2015-8875,

CVE-2016-6352