mailing list archives
Re: [BL4CK] - BL4CK FR1D4Y 2006-07-21
From: Valdis.Kletnieks () vt edu
Date: Fri, 21 Jul 2006 23:47:55 -0400
On Fri, 21 Jul 2006 17:13:43 CDT, redsand said:
Welcome to the zer0-day haulocaust.
-=[ Sendmail 8.13.5 and below Remote Signal Handling exploit
Proof of Concept for the remote signal handling vulnerability
From the Sendmail release notes:
SECURITY: Replace unsafe use of setjmp(3)/longjmp(3) in the server
and client side of sendmail with timeouts in the libsm I/O
layer and fix problems in that code. Also fix handling of
a buffer in sm_syslog() which could have been used as an
attack vector to exploit the unsafe handling of
setjmp(3)/longjmp(3) in combination with signals.
Problem detected by Mark Dowd of ISS X-Force.
It's not much of a zero day when the fix shipped 4 months ago, now is it?
Full-Disclosure - We believe in it.
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