ext/imap/php_imap.c in PHP 5.x and 7.x before 7.3.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty string in the message argument to the imap_mail function.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Php | Php | 5.6.0 (including) | 5.6.39 (excluding) |
| Php | Php | 7.0.0 (including) | 7.0.33 (excluding) |
| Php | Php | 7.1.0 (including) | 7.1.26 (excluding) |
| Php | Php | 7.2.0 (including) | 7.2.14 (excluding) |
| Php-imap | Ubuntu | trusty | * |
| Php7.0 | Ubuntu | upstream | * |
| Php7.0 | Ubuntu | xenial | * |
| Php7.2 | Ubuntu | bionic | * |
| Php7.2 | Ubuntu | cosmic | * |
| Php7.2 | Ubuntu | devel | * |
| Php7.2 | Ubuntu | upstream | * |
| Php7.3 | Ubuntu | upstream | * |