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[USN-1631-1] LibTIFF vulnerabilities

Posted on 15 November 2012
Ubuntu Security

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Ubuntu Security Notice USN-1631-1
November 15, 2012

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

- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

LibTIFF 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 LibTIFF incorrectly handled certain malformed imag=
es
using the PixarLog compression format. 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-2012-4447)

Huzaifa S. Sidhpurwala discovered that the ppm2tiff tool incorrectly
handled certain malformed PPM images. If a user or automated system were
tricked into opening a specially crafted PPM image, a remote attacker cou=
ld
crash the application, leading to a denial of service, or possibly execut=
e
arbitrary code with user privileges. (CVE-2012-4564)

Update instructions:

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

Ubuntu 12.10:
libtiff5 4.0.2-1ubuntu2.1

Ubuntu 12.04 LTS:
libtiff4 3.9.5-2ubuntu1.3

Ubuntu 11.10:
libtiff4 3.9.5-1ubuntu1.4

Ubuntu 10.04 LTS:
libtiff4 3.9.2-2ubuntu0.11

Ubuntu 8.04 LTS:
libtiff4 3.8.2-7ubuntu3.14

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


References:
http://www.ubuntu.com/usn/usn-1631-1
CVE-2012-4447, CVE-2012-4564

Package Information:
https://launchpad.net/ubuntu/+source/tiff/4.0.2-1ubuntu2.1
https://launchpad.net/ubuntu/+source/tiff/3.9.5-2ubuntu1.3
https://launchpad.net/ubuntu/+source/tiff/3.9.5-1ubuntu1.4
https://launchpad.net/ubuntu/+source/tiff/3.9.2-2ubuntu0.11
https://launchpad.net/ubuntu/+source/tiff/3.8.2-7ubuntu3.14



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