Radare2 has a use-after-free vulnerability in pyc parsers get_none_object function. Attacker can read freed memory afterwards. This will allow attackers to cause denial of service.
Weakness
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 Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Radare2 | Radare | 5.3.0 (including) | 5.3.0 (including) |
| Radare2 | Ubuntu | bionic | * |
| Radare2 | Ubuntu | focal | * |
| Radare2 | Ubuntu | trusty | * |
| Radare2 | Ubuntu | upstream | * |
| Radare2 | Ubuntu | xenial | * |