Programski paket tiff sadrži dva sigurnosna propusta koji omogućuju pokretanje proizvoljnog programskog koda te izazivanje stanja uskraćivanja usluge (DoS).

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Ubuntu Security Notice USN-1498-1
July 05, 2012

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

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

Software Description:
- tiff: Tag Image File Format (TIFF) library

Details:

It was discovered that the TIFF library incorrectly handled certain
malformed TIFF images. If a user or automated system were tricked into
opening a specially crafted TIFF image, a remote attacker could crash the
application, leading to a denial of service, or possibly execute arbitrary
code with user privileges. (CVE-2012-2088)

It was discovered that the tiff2pdf utility incorrectly handled certain
malformed TIFF images. If a user or automated system were tricked into
opening a specially crafted TIFF image, a remote attacker could crash the
application, leading to a denial of service, or possibly execute arbitrary
code with user privileges. (CVE-2012-2113)

Update instructions:

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

Ubuntu 12.04 LTS:
  libtiff-tools                   3.9.5-2ubuntu1.1
  libtiff4                        3.9.5-2ubuntu1.1

Ubuntu 11.10:
  libtiff-tools                   3.9.5-1ubuntu1.2
  libtiff4                        3.9.5-1ubuntu1.2

Ubuntu 11.04:
  libtiff-tools                   3.9.4-5ubuntu6.2
  libtiff4                        3.9.4-5ubuntu6.2

Ubuntu 10.04 LTS:
  libtiff-tools                   3.9.2-2ubuntu0.9
  libtiff4                        3.9.2-2ubuntu0.9

Ubuntu 8.04 LTS:
  libtiff-tools                   3.8.2-7ubuntu3.12
  libtiff4                        3.8.2-7ubuntu3.12

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

References:
  http://www.ubuntu.com/usn/usn-1498-1
  CVE-2012-2088, CVE-2012-2113

Package Information:
  https://launchpad.net/ubuntu/+source/tiff/3.9.5-2ubuntu1.1
  https://launchpad.net/ubuntu/+source/tiff/3.9.5-1ubuntu1.2
  https://launchpad.net/ubuntu/+source/tiff/3.9.4-5ubuntu6.2
  https://launchpad.net/ubuntu/+source/tiff/3.9.2-2ubuntu0.9
  https://launchpad.net/ubuntu/+source/tiff/3.8.2-7ubuntu3.12