exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

iDEFENSE Security Advisory 2007-01-05.2

iDEFENSE Security Advisory 2007-01-05.2
Posted Jan 7, 2007
Authored by iDefense Labs, Christoph Diehl | Site idefense.com

iDefense Security Advisory 01.05.07 - Remote exploitation of a heap overflow in Opera Software ASA's Opera Web browser could allow an attacker to execute arbitrary code in the security context of the current user. The vulnerability specifically exists due to Opera improperly processing a JPEG DHT marker. The DHT marker is used to define a Huffman Table which is used for decoding the image data. An invalid number of index bytes in the DHT marker will trigger a heap overflow with partially user controlled data. iDefense has confirmed the existence of this vulnerability in Opera version 9.02 on both Windows and Linux. Previous versions may also be affected.

tags | advisory, remote, web, overflow, arbitrary
systems | linux, windows
SHA-256 | 6c351dd5914ce569d5878f873352109dbf8f71015507f1fc7195ecfe13fb77be

iDEFENSE Security Advisory 2007-01-05.2

Change Mirror Download
Opera Software Opera Web Browser JPG Image DHT Marker Heap Corruption
Vulnerability

iDefense Security Advisory 01.05.07
http://labs.idefense.com/intelligence/vulnerabilities/
Jan 05, 2007

I. BACKGROUND

Opera is a cross-platform web browser. More information is available at
http://www.opera.com/

II. DESCRIPTION

Remote exploitation of a heap overflow in Opera Software ASA's Opera Web
browser could allow an attacker to execute arbitrary code in the security
context of the current user.

The vulnerability specifically exists due to Opera improperly processing a
JPEG DHT marker. The DHT marker is used to define a Huffman Table which is
used for decoding the image data. An invalid number of index bytes in the
DHT marker will trigger a heap overflow with partially user controlled
data.

III. ANALYSIS

Exploitation of this vulnerability would allow an attacker to execute
arbitrary code on the affected host. The attacker would first need to
construct a website containing the malicious image and trick the vulnerable
user into visiting the site. This would trigger the vulnerability and allow
the code to execute with the privileges of the local user.

IV. DETECTION

iDefense has confirmed the existence of this vulnerability in Opera version
9.02 on both Windows and Linux. Previous versions may also be affected.

V. WORKAROUND

iDefense is currently unaware of any effective workarounds for this issue.

VI. VENDOR RESPONSE

Opera Software has addressed this vulnerability in version 9.10. More
information is available at the following link.

http://www.opera.com/support/search/supsearch.dml?index=852


VII. CVE INFORMATION

A Mitre Corp. Common Vulnerabilities and Exposures (CVE) number has not
been assigned yet.

VIII. DISCLOSURE TIMELINE

11/16/2006 Initial vendor notification
11/17/2006 Initial vendor response
01/05/2007 Coordinated public disclosure

IX. CREDIT

This vulnerability was reported to iDefense by Christoph Diehl.

Get paid for vulnerability research
http://labs.idefense.com/methodology/vulnerability/vcp.php

Free tools, research and upcoming events
http://labs.idefense.com/

X. LEGAL NOTICES

Copyright © 2006 iDefense, Inc.

Permission is granted for the redistribution of this alert electronically.
It may not be edited in any way without the express written consent of
iDefense. If you wish to reprint the whole or any part of this alert in
any other medium other than electronically, please e-mail
customerservice@idefense.com for permission.

Disclaimer: The information in the advisory is believed to be accurate at
the time of publishing based on currently available information. Use of
the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct, indirect,
or consequential loss or damage arising from use of, or reliance on, this
information.

Login or Register to add favorites

File Archive:

March 2024

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close