CWE

CWE-432 – Dangerous Signal Handler not Disabled During Sensitive Operations

rocco
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Description

The application uses a signal handler that shares state with other signal handlers, but it does not properly mask or prevent those signal handlers from being invoked while the original signal handler is still running.

During the execution of a signal handler, it can be interrupted by another handler when a different signal is sent. If the two handlers share state – such as global variables – then an attacker can corrupt the state by sending another signal before the first handler has completed execution.

Modes of Introduction:

– Architecture and Design

 

 

Related Weaknesses

CWE-364

 

Consequences

Integrity: Modify Application Data

 

Potential Mitigations

Phase: Implementation

Description: 

Turn off dangerous handlers when performing sensitive operations.

CVE References

In,

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