A critical vulnerability has been identified in Sendmail, which could be exploited by remote attackers or network worms to take complete control of an affected system. This flaw is due to errors in the "setjmp()", "longjmp()" and "sm_syslog()" functions that do not properly handle certain asynchronous signals, which could be exploited by remote unauthenticated attackers to execute arbitrary commands by sending specially crafted requests to the SMTP port.
Credits
Vulnerability reported by Mark Dowd
ChangeLog
2006-03-22 : Initial release
2006-03-23 : Updated Advisory
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