OSEC

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Subject: xlock vulnerability
From: bind (bindSUBTERRAIN.NET)
Date: Wed Aug 16 2000 - 01:17:24 CDT


Hello,

A format bug exists in all X11R6 xlock's handling of the display ('-d') option.

(bindcassius ~) $ xlock -d %x%x%x%x%x
xlock: unable to open display dfbfd958402555e1ea748dfbfd958dfbfd654.

Systems that we tested that were vulnerable included OpenBSD 2.7, FreeBSD
4.1 and Slackware 7.1.

The patch is attached.

        -bind