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Improper handling of signals can lead to security vulnerabilities. The following rules and recommendations are meant to eliminate common errors associated with signal handling.

Recommendations

SIG00-A. Avoid using the same handler for multiple signals

SIG01-A. Understand implementation-specific details regarding signal handler persistence

Rules

SIG30-C. Only call async-safe functions within signal handlers

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SIG33-C. If a signal occurs as the result of abort() or raise(), it shall not call the raise() function

Risk Assessment Summary

Recommendations

Recommendation

Severity

Likelihood

Remediation Cost

Priority

Level

SIG00-A

3 (high)

3 (likely)

1 (high)

P9

L2

SIG01-A

1 (high)

1 (likely)

3 (low)

P3

L3

Rules

Rule

Severity

Likelihood

Remediation Cost

Priority

Level

SIG30-C

3 (high)

3 (likely)

1 (high)

P9

L2

SIG31-C

3 (high)

3 (likely)

1 (high)

P9

L2

SIG32-C

3 (high)

3 (likely)

1 (high)

P9

L2

SIG33-C

1 (low)

1 (uinlikely)

3 (low)

P3

L3