| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <469F86F0.7050302@idefense.com> Date: Thu, 19 Jul 2007 11:44:48 -0400 From: iDefense Labs <labs-no-reply@...fense.com> To: vulnwatch@...nwatch.org, full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com Subject: iDefense Security Advisory 07.19.07: Opera Software Opera Web Browser BitTorrent Dangling Pointer Vulnerability Opera Software Opera Web Browser BitTorrent Dangling Pointer Vulnerability iDefense Security Advisory 07.19.07 http://labs.idefense.com/intelligence/vulnerabilities/ Jul 19, 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 dangling pointer vulnerability in Opera Software ASA's Opera web browser could allow an attacker to execute arbitrary code with the privileges of the logged in user. Opera 9.2 supports BitTorrent downloads. When parsing a specially crafted BitTorrent header, Opera uses memory that has already been freed. This can result in an invalid object pointer being dereferenced, and may allow for the execution of arbitrary code. The vulnerability is triggered when the user right clicks on the transfer and removes it. III. ANALYSIS Exploitation of this vulnerability allows an attacker to execute arbitrary code on the affected host with the privileges of the logged in user. The attacker must persuade a vulnerable user into clicking a link to a BitTorrent file. The targeted user must subsequently remove the entry from the download pane. The requirement to remove the torrent is not considered to be a mitigating factor since it is natural for a user to attempt to do so when a transfer is not progressing. IV. DETECTION iDefense has confirmed the existence of this vulnerability in Opera version 9.21 on Windows. Previous versions may also be affected. V. WORKAROUND iDefense is currently unaware of any workarounds for this issue. VI. VENDOR RESPONSE Version 9.22 of Opera has been released to address this issue. More information can be found at the following URL. http://www.opera.com/support/search/view/862/ VII. CVE INFORMATION A Mitre Corp. Common Vulnerabilities and Exposures (CVE) number has not been assigned yet. VIII. DISCLOSURE TIMELINE 06/06/2007 Initial vendor notification 06/06/2007 Initial vendor response 07/19/2007 Coordinated public disclosure IX. CREDIT This vulnerability was reported to iDefense by enhalos. 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 © 2007 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@...fense.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. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Powered by blists - more mailing lists