Hole in the vacation program

Description:The standard UNIX vacation program doesn't do enough checking on its input (specifically the From: line in the mail) before sending it to other programs (sendmail) for processing
Author:bukys@CS.ROCHESTER.EDU apparently reported it to CERT & SUN on June 1, 1994 but nothing happened. This vulnerability report is from "Secure Networks Inc." <sni@SILENCE.SECNET.COM>
Compromise:Run arbitrary commands remotely as the user running vacation
Vulnerable Systems:At least some versions of AIX, FreeBSD, NetBSD, and OpenBSD. Other systems if they have installed the vacation program themselves or a different version of sendmail.
Date:1 September 1997

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