Tag Archives: Improper Cleanup on Thrown Exception

CWE-460 – Improper Cleanup on Thrown Exception

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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.

Modes of Introduction:

– Implementation

 

Likelihood of Exploit: Medium

 

Related Weaknesses

CWE-459
CWE-755

 

Consequences

Other: Varies by Context

The code could be left in a bad state.

 

Potential Mitigations

Phase: Implementation

Description: 

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.

CVE References