Apple Webkit SVG Floating Text Element Remote Code Execution Vulnerability

August 11th, 2010
ZDI-10-153 ZDI-CAN-785

CVE ID

CVE-2010-1787

CVSS Score

10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected Vendors

Apple

Affected Products

WebKit

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari's Webkit. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the library's process for handling floating elements within an SVG document. During layout of the element, the application will mismanage references to the floating element. Later the application will attempt to destroy this reference triggering corruption. Successful exploitation can lead to code execution under the context of the application.

Additional Details

Fixed in Safari 5.0.1: http://support.apple.com/kb/HT4276


Disclosure Timeline

  • 2010-06-01 - Vulnerability reported to vendor
  • 2010-08-11 - Coordinated public release of advisory

Credit

wushi of team509

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