exploits/php7-backtrace-bypass at master · mm0r1/exploits · GitHub

 3 years ago
source link: https://github.com/mm0r1/exploits/tree/master/php7-backtrace-bypass
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PHP 7.0-7.4 disable_functions bypass

This exploit uses a two year old bug in debug_backtrace() function. We can trick it into returning a reference to a variable that has been destroyed, causing a use-after-free vulnerability. The PoC was tested on various php builds for Debian/Ubuntu/CentOS/FreeBSD with cli/fpm/apache2 server APIs and found to work reliably.


  • 7.0 - all versions to date
  • 7.1 - all versions to date
  • 7.2 - all versions to date
  • 7.3 < 7.3.15 (released 20 Feb 2020)
  • 7.4 < 7.4.3 (released 20 Feb 2020)

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