Ubuntu Security Notice USN-2831-1

7th December, 2015

cups-filters vulnerability

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

• Ubuntu 15.10
• Ubuntu 15.04
• Ubuntu 14.04 LTS

Summary

cups-filters could be made to run programs as the lp user if it processed a
specially crafted print job.

Software description

• cups-filters
  – OpenPrinting CUPS Filters

Details

Michal Kowalczyk discovered that the cups-filters foomatic-rip filter
incorrectly stripped shell escape characters. A remote attacker could
possibly use this issue to execute arbitrary code as the lp user.

Update instructions

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

Ubuntu 15.10:

cups-filters

1.0.76-1ubuntu0.1

Ubuntu 15.04:

cups-filters

1.0.67-0ubuntu2.5

Ubuntu 14.04 LTS:

cups-filters

1.0.52-0ubuntu1.6

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-2015-8327

Ubuntu Security Notice USN-2831-2

7th December, 2015

foomatic-filters vulnerability

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

• Ubuntu 12.04 LTS

Summary

foomatic-filters could be made to run programs as the lp user if it
processed a specially crafted print job.

Software description

• foomatic-filters
  – OpenPrinting printer support – filters

Details

Michal Kowalczyk discovered that the foomatic-filters foomatic-rip filter
incorrectly stripped shell escape characters. A remote attacker could
possibly use this issue to execute arbitrary code as the lp user.

Update instructions

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

Ubuntu 12.04 LTS:

foomatic-filters

4.0.16-0ubuntu0.3

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-2015-8327

Ubuntu Security Notice USN-2832-1

7th December, 2015

libsndfile vulnerabilities

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

• Ubuntu 15.10
• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

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

Software description

• libsndfile
  – Library for reading/writing audio files

Details

It was discovered that libsndfile incorrectly handled memory when parsing
malformed files. A remote attacker could use this issue to cause
libsndfile to crash, resulting in a denial of service. This issue only
applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-9496)

Joshua Rogers discovered that libsndfile incorrectly handled division when
parsing malformed files. A remote attacker could use this issue to cause
libsndfile to crash, resulting in a denial of service. (CVE-2014-9756)

Marco Romano discovered that libsndfile incorrectly handled certain
malformed AIFF files. A remote attacker could use this issue to cause
libsndfile to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2015-7805)

Update instructions

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

Ubuntu 15.10:

libsndfile1

1.0.25-9.1ubuntu0.15.10.1

Ubuntu 15.04:

libsndfile1

1.0.25-9.1ubuntu0.15.04.1

Ubuntu 14.04 LTS:

libsndfile1

1.0.25-7ubuntu2.1

Ubuntu 12.04 LTS:

libsndfile1

1.0.25-4ubuntu0.1

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-2014-9496,

CVE-2014-9756,

CVE-2015-7805