Apple Mac OS X mDNSResponder UPnP IGD buffer overflow

Notification Type: IBM Internet Security Systems Protection Alert
Notification Date: May 24, 2007
Notification Version: 1.0
   
Name: Apple Mac OS X mDNSResponder UPnP IGD buffer overflow
Public disclosure/
In the wild date:		 May 24, 2007 (vuln disclosure)
CVE: CVE-2007-2386
Description:

Apple Mac OS X is vulnerable to a buffer overflow in the UPnP IGD (Internet Gateway Device Standardized Device Control Protocol) code of the mDNSResponder implementation.

 

ISS Coverage
Product Content Version
Network Sensor 7.0
Proventia A
Proventia IPS (G/GX)
Server Sensor 7.0
Proventia Multifunction Appliance
Proventia Server (Linux)

Firmware 1.2 and later: 1.97

Prior to firmware 1.2: 24.58

Proventia Server (Windows)
Proventia Desktop		 x.x.x.1980
RealSecure Desktop 7.0 EQC
BlackICE PC Protection 3.6 CQC
Propagation Techniques ISS Protection Available
remote exploit  UPnP_Request_Overflow April, 8, 2007

Detailed Description
Business Impact: This exploit allows an attacker to obtain complete control over the target system.
CVSS: Base Score: 8
  Access Vector: Remote
Access Complexity: High
Authentication: Not Required
Confidentiality Impact: Complete 
Integrity Impact: Complete 
Availability Impact: Complete 
Impact Bias: Normal 
Adjusted Temporal Score: 5.9
  Exploitability: Unproven
Remediation Level: Official Fix
Report Confidence: Confirmed 
Affected Products:

Apple Computer, Inc.: Mac OS X 10.4 - 10.4.9
Apple Computer, Inc.: Mac OS X Server 10.4 - 10.4.9

Technical Description:

Apple Mac OS X is vulnerable to a buffer overflow in the UPnP IGD (Internet Gateway Device Standardized Device Control Protocol) code of the mDNSResponder implementation. By sending a specially-crafted packet to a vulnerable system, a remote attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges

Remediation:

Apply Apple Security Update 2007-005, available from the Apple Web site. See References.

If you cannot immediately install the patch, you can disable the affected component by using the following command:
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

To re-enable the component use:
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

Disabling this component disables many other features:
Printing with Auto Discovery, Airport and Airport Express, AirTunes, sharing iTunes music, calendars, address books, etc.

More discussion about using this workaround is available at: http://www.macosxhints.com/article.php?story=20050707222434355

References
XFDB http://xforce.iss.net/xforce/xfdb/34493
Apple http://docs.info.apple.com/article.html?artnum=305530

Revision History
1.0 Initial publication.

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