CVE-2015-9253

An issue was discovered in PHP 7.3.x before 7.3.0alpha3, 7.2.x before 7.2.8, and before 7.1.20. The php-fpm master process restarts a child process in an endless loop when using program execution functions (e.g., passthru, exec, shell_exec, or system) with a non-blocking STDIN stream, causing this master process to consume 100% of the CPU, and consume disk space with a large volume of error logs, as demonstrated by an attack by a customer of a shared-hosting facility.

An issue was discovered in PHP 7.3.x before 7.3.0alpha3, 7.2.x before 7.2.8, and before 7.1.20. The php-fpm master process restarts a child process in an endless loop when using program execution functions (e.g., passthru, exec, shell_exec, or system) with a non-blocking STDIN stream, causing this master process to consume 100% of the CPU, and consume disk space with a large volume of error logs, as demonstrated by an attack by a customer of a shared-hosting facility.

An issue was discovered in PHP 7.3.x before 7.3.0alpha3, 7.2.x before 7.2.8, and before 7.1.20. The php-fpm master process restarts a child process in an endless loop when using program execution functions (e.g., passthru, exec, shell_exec, or system) with a non-blocking STDIN stream, causing this master process to consume 100% of the CPU, and consume disk space with a large volume of error logs, as demonstrated by an attack by a customer of a shared-hosting facility.

An issue was discovered in PHP 7.3.x before 7.3.0alpha3, 7.2.x before 7.2.8, and before 7.1.20. The php-fpm master process restarts a child process in an endless loop when using program execution functions (e.g., passthru, exec, shell_exec, or system) with a non-blocking STDIN stream, causing this master process to consume 100% of the CPU, and consume disk space with a large volume of error logs, as demonstrated by an attack by a customer of a shared-hosting facility.

An issue was discovered in PHP 7.3.x before 7.3.0alpha3, 7.2.x before 7.2.8, and before 7.1.20. The php-fpm master process restarts a child process in an endless loop when using program execution functions (e.g., passthru, exec, shell_exec, or system) with a non-blocking STDIN stream, causing this master process to consume 100% of the CPU, and consume disk space with a large volume of error logs, as demonstrated by an attack by a customer of a shared-hosting facility.

• SECURITY UPDATE: Denial of service
  • debian/patches/CVE-2015-9253-pre1.patch: include .inc files used in fpm tests in sapi/fpm/tests/ alogin with other .phpt test scripts.
  • debian/patches/CVE-2015-9253-pre2.patch: close the listening socket on sapi/fpm/fpm/fpm_signals.c and added tests in sapi/fpm/tests/bug77934-reload-process-control.phpt.
  • debian/patches/CVE-2015-9253.patch: directly listen on socket, instead of dumping it to STDIN in sapi/fpm/fpm/fpm_children.c, sapi/fpm/fpm_stdio.c, and added tests in sapi/fpm/tests/bug73342-nonblocking-stdio.phpt.
  • CVE-2015-9253
• SECURITY UPDATE: Integer overflow
  • debian/patches/CVE-2017-8923-pre.patch: added ZSTR_MAX_LEN macro in Zend/zend_string.h and make use of it in Zend/zend_operators.c instead of using SIZE_MAX.
  • debian/patches/CVE-2017-8923.patch: added a length check before calling zend_string_realloc method in Zend/zend_vm_def.h and Zend/zend_vm_execute.h.
  • CVE-2017-8923
• SECURITY UPDATE: Integer overflow
  • debian/patches/CVE-2017-9118.patch: added ZSTR_MAX_OVERHEAD macro in Zend/zend_string.h that has the the maximal overhead of a zend_string and uses it in ext/pcre/php_pcre.c to assign a zend_string length value.
  • CVE-2017-9118
• SECURITY UPDATE: Use after free
  • debian/patches/CVE-2017-9119.patch: changed the decrement of refcount to be made once the string allocation has succeeded in Zend/zend_string.h.
  • CVE-2017-9119
• SECURITY UPDATE: Integer overflow
  • debian/patches/CVE-2017-9120.patch: changed the string allocation from zend_string_alloc to zend_string_safe_alloc in ext/mysqli/mysqli_api.c.
  • CVE-2017-9120
• SECURITY UDPATE: Improper handling of special characters
  • debian/patches/CVE-2021-21707.patch: added a string validation to check for improper characters in ext/dom/domimplementation.c and in ext/libxml/libxml.c and added tests in ext/simplexml/tests/bug79971_1.phpt and ext/dom/tests/bug79971_2.phpt.
  • CVE-2021-21707