Updated netpbm packages that fix a security issue are now available.
This update has been rated as having low security impact by the CentOS
Security Response Team.
The netpbm package contains a library of functions that support
programs for handling various graphics file formats, including .pbm
(portable bitmaps), .pgm (portable graymaps), .pnm (portable anymaps),
.ppm (portable pixmaps) and others.
A bug was found in the way netpbm converts PostScript files into PBM, PGM
or PPM files. An attacker could create a carefully crafted PostScript file
in such a way that it could execute arbitrary commands when the
file is processed by a victim using pstopnm. The Common Vulnerabilities
and Exposures project assigned the name CAN-2005-2471 to this issue.
All users of netpbm should upgrade to the updated packages, which
contain a backported patch to resolve this issue.