full-disclosure - [+] Vulnerability in less version 394 and prior

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Message-ID: <a401c74d0710302129g42d456e0he78a77159bb1c32c@mail.gmail.com>
Date: Wed, 31 Oct 2007 00:29:15 -0400
From: glopeda.com <glopeda@...peda.com>
To: full-disclosure@...ts.grok.org.uk
Subject: [+] Vulnerability in less version 394 and prior

From: glopeda@...peda.com
Application: less 394 and prior
Type: Format strings vulnerability
Priority: Low

There exists a format strings bug in the less application present in
most flavors of UNIX.  It could be leveraged for privilege escalation
if the calling application is setuid/setgid and does not properly drop
privileges.

Meager demonstration:
$ export LESSOPEN=%s%n
$ less somefile
Segmentation fault
$

See http://www.glopeda.com for more details.

-- 
Site: http://www.glopeda.com
E-mail: glopeda@...peda.com
Name: Mitch

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