CWE-460 — Improper Cleanup on Thrown Exception
CWE-460: Improper Cleanup on Thrown Exception
MITRE CWE weakness
| Kind | Weakness |
| Abstraction | Base |
| Status | Draft |
| Likelihood of exploit | Medium |
Description
The product does not clean up its state or incorrectly cleans up its state when an exception is thrown, leading to unexpected state or control flow.
Often, when functions or loops become complicated, some level of resource cleanup is needed throughout execution. Exceptions can disturb the flow of the code and prevent the necessary cleanup from happening.
Common consequences
- Other: Varies by Context
Mitigations
Implementation — If one breaks from a loop or function by throwing an exception, make sure that cleanup happens or that you should exit the program. Use throwing exceptions sparsely.
References
- CWE page: https://cwe.mitre.org/data/definitions/460.html
- CWE list: https://cwe.mitre.org/data/index.html