The DBD::mysql module through 4.043 for Perl allows remote attackers to cause a denial of service (use-after-free and application crash) or possibly have unspecified other impact by triggering (1) certain error responses from a MySQL server or (2) a loss of a network connection to a MySQL server. The use-after-free defect was introduced by relying on incorrect Oracle mysql_stmt_close documentation and code examples.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Dbd-mysql | Dbd-mysql_project | * | 4.043 (including) |
| Libdbd-mysql-perl | Ubuntu | artful | * |
| Libdbd-mysql-perl | Ubuntu | esm-apps/xenial | * |
| Libdbd-mysql-perl | Ubuntu | esm-infra-legacy/trusty | * |
| Libdbd-mysql-perl | Ubuntu | precise/esm | * |
| Libdbd-mysql-perl | Ubuntu | trusty | * |
| Libdbd-mysql-perl | Ubuntu | trusty/esm | * |
| Libdbd-mysql-perl | Ubuntu | upstream | * |
| Libdbd-mysql-perl | Ubuntu | xenial | * |
| Libdbd-mysql-perl | Ubuntu | yakkety | * |
| Libdbd-mysql-perl | Ubuntu | zesty | * |