OpenSC before 0.20.0 has a double free in coolkey_free_private_data because coolkey_add_object in libopensc/card-coolkey.c lacks a uniqueness check.
Weakness
The product calls free() twice on the same memory address.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Opensc | Opensc_project | * | 0.20.0 (excluding) |
| Red Hat Enterprise Linux 8 | RedHat | opensc-0:0.20.0-2.el8 | * |
| Opensc | Ubuntu | bionic | * |
| Opensc | Ubuntu | eoan | * |
| Opensc | Ubuntu | esm-apps/bionic | * |
| Opensc | Ubuntu | trusty | * |
| Opensc | Ubuntu | upstream | * |
| Opensc | Ubuntu | xenial | * |
Potential Mitigations
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19208
- https://github.com/OpenSC/OpenSC/commit/c246f6f69a749d4f68626b40795a4f69168008f4
- https://github.com/OpenSC/OpenSC/compare/0.19.0...0.20.0
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19208
- https://github.com/OpenSC/OpenSC/commit/c246f6f69a749d4f68626b40795a4f69168008f4
- https://github.com/OpenSC/OpenSC/compare/0.19.0...0.20.0