TippingPoint Zero Day Initiative
 

(Mobile Pwn2Own) Apple Safari shiftCount/splice Remote Code Execution Vulnerability

ZDI-13-009: February 1st, 2013

CVE ID

CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 12482. For further product information on the TippingPoint IPS:

Vulnerability Details


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari. 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 handling of Array objects. When splicing a sparse array, the size of a sparse array is not properly validated. In addition, parameters checked at the beginning of a function are never again validated despite being modified later on. By abusing this behavior an attacker can ensure this memory is under control and leverage the situation to achieve remote code execution.

Vendor Response

Apple has issued an update to correct this vulnerability. More details can be found at:
Apple has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2012-09-02 - Vulnerability reported to vendor
    2013-02-01 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Joost Pol and Daan Keuper of Certified Secure