TippingPoint Zero Day Initiative
 

Apple Mobile Safari isindex Use-After-Free Remote Code Execution Vulnerability

ZDI-14-057: April 3rd, 2014

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 13507. 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 isindex elements. The issue lies in setting attributes to invalid values. By manipulating a document's elements an attacker can force a dangling pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process.

Vendor Response

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

Disclosure Timeline

    2014-01-30 - Vulnerability reported to vendor
    2014-04-03 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    ant4g0nist (SegFault)