So the script is a part of a web application / plugin which is basically a malware scanner.
Webserver owners install this app and schedule it to run on a periodic basis.
This means that it could be a LAMP or LEMP or other kind of stack with cgi or mod_php etc.
Hang / Freeze: The issue is that some regexes / payloads or a combination thereof makes the script exceed max_execution_time. This is not desirable or even expected.
In this case it's acceptable for the script to hit max_execution_time and the app will just schedule the next batch.
However with the bug in question, the script exceeds max_execution_time and PHP has no way to recover.
One way was to have a url-endpoint where we could post a request via curl and if that fails or times-out the script can still continue. But I was interested in exploring if PHP itself can recover from such a situation without having to rely on an external process.
Regards,
Shivanand Sharma
Shivanand Sharma
