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Interrupting a non-interruptible signal handler can result in a variety of vulnerabilities \[[Zalewski 01|AA. C References#Zalewski 01]\]. |
Recommendation | Severity | Likelihood | Remediation Cost | Priority | Level |
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SIG00-A | 3 (high) | 3 (likely) | 1 (high) | P9 | L2 |
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\[[Dowd 06 | AA. C References#Dowd 06]\] Chapter 13, "Synchronization and State" (Signal Interruption and Repetition)
\[[ISO/IEC 03|AA. C References#ISO/IEC 03]\] Section 5.2.3, "Signals and interrupts"
\[[Open Group 04|AA. C References#Open Group 04]\] [longjmp|http://www.opengroup.org/onlinepubs/000095399/functions/longjmp.html]
\[OpenBSD\] [{{signal()}} Man Page|http://www.openbsd.org/cgi-bin/man.cgi?query=signal]
\[[Zalewski\] [http://lcamtuf.coredump.cx/signals.txt 01|AA. C References#Zalewski 01]\] |
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12. Signals (SIG) 12. Signals (SIG) SIG01-A. Understand implementation-specific details regarding signal handler persistence