Advisory Details

December 6th, 2007

Skype URI Handler Remote Heap Corruption Vulnerability

ZDI-07-070
ZDI-CAN-236

CVE ID CVE-2007-5989
CVSS SCORE
AFFECTED VENDORS Skype
AFFECTED PRODUCTS Skype
TIPPINGPOINT™ IPS CUSTOMER PROTECTION TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 5752. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Skype. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.

The specific flaw exists within the 'skype4com' URI handler created by Skype during installation. When processing short string values through this handler an exploitable memory corruption may occur which can result in arbitrary code execution under the context of the current user.

VENDOR RESPONSE Skype states:

Skype has corrected this issue as of 11/15/2007. All clients updated or installed as of that date are patched to this issue.


DISCLOSURE TIMELINE
  • 2007-11-02 - Vulnerability reported to vendor
  • 2007-12-06 - Coordinated public release of advisory
CREDIT Anonymous
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