PHP exif data DoS
An error in the way php processes exif image data has been found.
This flaw will cause PHP to enter an infinite loop when
exif_read_data() against the malicious image. The PHP process will
continue to consume computing resources until the PHP process is
When run through httpd, the PHP process will eventually timeout and be
killed. This is only a temporary DoS when PHP is run from httpd..
This issue also affects RHEL3
This issue also affects RHEL2.1
Note this is not actually an infinite loop but an infinite function recursion,
so it causes an immediate process crash rather than a loop-then-timeout.
This issue doesn't affect RHEL2.1 as exif_read_data is undefined and as per php
docs this function is available in PHP 4 >= 4.2.0, PHP 5 while RHEL-2.1 contains
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.