Adobe Flash Player Invalid Pointer Vulnerability

Notification Type: IBM Internet Security Systems Protection Advisory
Notification Date: April 08, 2008
Notification Version: 1.1
   
Name: Adobe Flash Player Invalid Pointer Vulnerability
Public disclosure/
In the wild date:
April 08, 2008 (vuln disclosure), May 27, 2008 (active exploitation)
Aliases: APSB08-11
CVE: CVE-2007-0071
Description:

Several reports have stated that a zero-day Flash vulnerability is being exploited through several Chinese hacker websites.  All of the samples X-Force has seen target the vulnerability disclosed in this Advisory, and X-Force has confirmed that the IPS protection released in November of 2007 does block these samples that are circulating in the wild. The specific signature that covers this issue is Multimedia_File_Overflow and is on and blocked by default in the Trust X-Force policy.  For more details, see ISS Product Coverage Section below.

Some public reports have claimed that the exploits target an unpatched vulnerability, but the samples X-Force has analyzed do not confirm that statement. X-Force will update this Advisory with additional details as they emerge.

Brief description:

Adobe Flash Player is vulnerable to a buffer overflow, caused by an integer overflow vulnerability in the processing of multimedia files. By creating a specially-crafted multimedia file and persuading the victim to open the file, a remote attacker could overflow a buffer and execute arbitrary code on the system.

Discoverer: Mark Dowd of IBM X-Force

 

ISS Coverage

Product Content Version
Proventia Network IDS
Proventia Network IPS
Proventia Network MFS
Proventia Server (Linux)
RealSecure Network
RealSecure Server Sensor
27.110
Proventia Desktop
Proventia Server IPS (Windows)
2120
Propagation Techniques ISS Protection Available

remote exploit

Multimedia_File_Overflow

Nov 13, 2007

Detailed Description

Business Impact: Compromise of networks and machines using affected versions of Flash may lead to exposure of confidential information, loss of productivity, and further network compromise.  Remote code execution could be achieved by enticing a user to click a link in an email, on a web page, or other method that might embed content that is interpreted by the Adobe Flash Player.
CVSS Base Score: 9.3
  Access Vector: Network
Access Complexity: Medium
Authentication: None
Confidentiality Impact: Complete
Integrity Impact: Complete
Availability Impact: Complete
Adjusted Temporal Score: 6.9
  Exploitability: Unproven
Remediation Level: Official-Fix
Report Confidence: Confirmed
Affected Products: For a full list of affected versions, see references below.
Technical Description:

Adobe Flash Player does not properly handle a specific tag that can exist in multimedia files.  Improper handling of certain values causes a pointer calculation to go awry, which allows the attacker to write to any memory location and execute code.

Remediation:

Patches are available for this issue. See References for details.

References

XFDB: http://xforce.iss.net/xforce/xfdb/37277
Adobe: http://www.adobe.com/support/security/bulletins/apsb08-11.html

Revision History

1.0 Initial publication.
1.1 Live exploitation reported May 27, 2008.

* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

About IBM Security Systems

IBM Security Systems include an extensive portfolio of hardware, software solutions, professional and managed services offerings covering the spectrum of IT and business security risks: people and identity, data and information, application and process, network, server and endpoint and physical infrastructure, empowering clients to innovate and operate their businesses on the most secure infrastructure platforms. Through world-class solutions that address risk across the enterprise, IBM helps organizations build a strong security posture that helps reduce costs, improve service, and manage risk. IBM X-Force(R) Research and Development is one of the most renowned commercial security research and development groups in the world. For more information on how to address today's biggest risks, please visit us at ibm.com/security.