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             AUSCERT External Security Bulletin Redistribution

         (0Day) Apple QuickTime 'mvhd' Atom Heap Memory Corruption
                    Remote Code Execution Vulnerability
                               24 July 2014


        AusCERT Security Bulletin Summary

Product:           Apple QuickTime
Publisher:         Zero Day Initiative
Operating System:  Windows
                   OS X
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        None
CVE Names:         CVE-2014-4979  

Original Bulletin: 

Comment: The Zero Day initiative has released the following advisory of a 
         currently unpatched vulnerability in Apple's QuickTime application.
         Currently the only mitigation available is to solely use QuickTime 
         with trusted media files.

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(0Day) Apple QuickTime 'mvhd' Atom Heap Memory Corruption Remote Code Execution

ZDI-14-264: July 23rd, 2014



CVSS Score

    6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P) 

Affected Vendors


Affected Products


TippingPoint IPS Customer Protection
TippingPoint IPS customers are protected against this vulnerability by Digital 
Vaccine protection filter ID 13489. For further product information on the 
TippingPoint IPS:


Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on 
vulnerable installations of Apple QuickTime. 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 'mvhd' atom. By providing a malformed 
version and flags, an attacker is able to create controllable memory 
corruption, and trigger an arbitrary write operation. By exploiting this, an 
attacker could execute code in the context of the current user.

Vendor Response
Apple states:

This vulnerability is being disclosed publicly without a patch in accordance 
with the ZDI 180 day deadline.

12/20/2013 - Disclosed to vendor
12/20/2013 - acknowledgement from vendor
05/30/2014 - Reminded vendor of 180-day deadline, 06/18/2014
05/30/2014 - Vendor advised update scheduled for 09/2014
07/23/2014 - Public release of advisory

- -- Vendor Mitigation:

The vendor did not provide any mitigations.

- -- Mitigation:

Given the stated purpose of QuickTime, and the nature of the vulnerability, 
the only salient mitigation strategy is to restrict interaction with the 
application to trusted media files.

Disclosure Timeline

    2014-02-18 - Case submitted to the ZDI
    2014-07-23 - Public release of advisory

This vulnerability was discovered by:

    Andrea Micalizzi aka rgod

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