PHP GIF heap overflow.
Heap buffer overflow in the GD extension, in the LWZReadByte() function,
triggered by invalid GIF files.
This issue also affects RHEL3
This issue does not affect RHEL2.1 (GIF support not present)
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.