1. Ubuntu Security Notices
  2. USN-164-1

USN-164-1: netpbm vulnerability

Publication date

11 August 2005

Overview

netpbm vulnerability

Releases

Details

Max Vozeler discovered that the the “pstopnm” conversion tool did not
use the -dSAFER option when calling ghostscript. This option prohibits
file operations and calling commands within PostScript code. This flaw
could be exploited by an attacker to execute arbitrary code if he
tricked an user (or an automatic server) into processing a specially
crafted PostScript document with pstopnm.

Max Vozeler discovered that the the “pstopnm” conversion tool did not
use the -dSAFER option when calling ghostscript. This option prohibits
file operations and calling commands within PostScript code. This flaw
could be exploited by an attacker to execute arbitrary code if he
tricked an user (or an automatic server) into processing a specially
crafted PostScript document with pstopnm.

Update instructions

In general, a standard system update will 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
5.04 hoary netpbm – 
4.10 warty netpbm – 

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References

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