what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

ringtonetools.txt

ringtonetools.txt
Posted Dec 30, 2004
Authored by Qiao Zhang

Ringtone Tools version 2.22 is susceptible to a buffer overflow in the parse_emelody() function.

tags | advisory, overflow
SHA-256 | 0913841787d40062b8ee4df0ada5efe1147d121c51613149421228d9de960439

ringtonetools.txt

Change Mirror Download
From djb@cr.yp.to Wed Dec 15 14:21:48 2004
Date: 15 Dec 2004 08:22:15 -0000
From: D. J. Bernstein <djb@cr.yp.to>
To: securesoftware@list.cr.yp.to, mike@mikekohn.net
Subject: [remote] [control] ringtonetools 2.22 parse_emelody overflows song
buffer

Qiao Zhang, a student in my Fall 2004 UNIX Security Holes course, has
discovered a remotely exploitable security hole in ringtonetools. I'm
publishing this notice, but all the discovery credits should be assigned
to Zhang.

You are at risk if you take an eMelody file from an email message (or a
web page or any other source that could be controlled by an attacker)
and feed that file through ringtonetools. Whoever provides that file
then has complete control over your account: she can read and modify
your files, watch the programs you're running, etc.

The ringtonetools documentation does not tell users to avoid taking
input from the network. In fact, the documentation explicitly suggests
downloading eMelody files from the web.

Proof of concept: On an x86 computer running FreeBSD 4.10, type

wget http://downloads.mikekohn.net/ringtonetools/ringtonetools-2.22.tar.gz
gunzip < ringtonetools-2.22.tar.gz | tar -xf -
cd ringtonetools-2.22
make

to download and compile the ringtonetools program, version 2.22
(current). Then save the file 31.emelody attached to this message, and
type

./ringtonetools 31.emelody

with the unauthorized result that a file named EXPLOITED is created in
the current directory.

Here's the bug: In parse_emelody.c, parse_emelody() reads any amount of
input into a 1024-byte song[] array.

---D. J. Bernstein, Associate Professor, Department of Mathematics,
Statistics, and Computer Science, University of Illinois at Chicago

[ Part 2, Text/PLAIN (charset: unknown-8bit) 111 lines. ]
[ Unable to print this part. ]

Login or Register to add favorites

File Archive:

August 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Aug 1st
    20 Files
  • 2
    Aug 2nd
    4 Files
  • 3
    Aug 3rd
    6 Files
  • 4
    Aug 4th
    55 Files
  • 5
    Aug 5th
    16 Files
  • 6
    Aug 6th
    0 Files
  • 7
    Aug 7th
    0 Files
  • 8
    Aug 8th
    13 Files
  • 9
    Aug 9th
    13 Files
  • 10
    Aug 10th
    0 Files
  • 11
    Aug 11th
    0 Files
  • 12
    Aug 12th
    0 Files
  • 13
    Aug 13th
    0 Files
  • 14
    Aug 14th
    0 Files
  • 15
    Aug 15th
    0 Files
  • 16
    Aug 16th
    0 Files
  • 17
    Aug 17th
    0 Files
  • 18
    Aug 18th
    0 Files
  • 19
    Aug 19th
    0 Files
  • 20
    Aug 20th
    0 Files
  • 21
    Aug 21st
    0 Files
  • 22
    Aug 22nd
    0 Files
  • 23
    Aug 23rd
    0 Files
  • 24
    Aug 24th
    0 Files
  • 25
    Aug 25th
    0 Files
  • 26
    Aug 26th
    0 Files
  • 27
    Aug 27th
    0 Files
  • 28
    Aug 28th
    0 Files
  • 29
    Aug 29th
    0 Files
  • 30
    Aug 30th
    0 Files
  • 31
    Aug 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Hosting By
Rokasec
close