ZDI-07-065: Apple QuickTime Color Table RGB Parsing Heap Corruption Vulnerability Nov 05 2007 10:39PM
zdi-disclosures 3com com
ZDI-07-065: Apple QuickTime Color Table RGB Parsing Heap Corruption



November 5, 2007

-- CVE ID:


-- Affected Vendor:


-- Affected Products:

QuickTime 7.2

-- TippingPoint(TM) IPS Customer Protection:

TippingPoint IPS customers have been protected against this

vulnerability by Digital Vaccine protection filter ID 5610.

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 open a

malicious file.

The specific flaw exists in the parsing of the CTAB atom. While reading

the CTAB RGB values, an invalid color table size can cause QuickTime to

write past the end of the heap chunk. This memory corruption can lead

to the execution of arbitrary code.

-- Vendor Response:

Apple has issued an update to correct this vulnerability. More details

can be found at:


-- Disclosure Timeline:

2007.09.14 - Vulnerability reported to vendor

2007.11.05 - Coordinated public release of advisory

-- Credit:

This vulnerability was discovered by Ruben Santamarta of reversemode.com


Mario Ballano of 48bits.com.

-- About the Zero Day Initiative (ZDI):

Established by TippingPoint, The Zero Day Initiative (ZDI) represents

a best-of-breed model for rewarding security researchers for responsibly

disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research

through the ZDI can find more information and sign-up at:


The ZDI is unique in how the acquired vulnerability information is used.

3Com does not re-sell the vulnerability details or any exploit code.

Instead, upon notifying the affected product vendor, 3Com provides its

customers with zero day protection through its intrusion prevention

technology. Explicit details regarding the specifics of the

vulnerability are not exposed to any parties until an official vendor

patch is publicly available. Furthermore, with the altruistic aim of

helping to secure a broader user base, 3Com provides this vulnerability

information confidentially to security vendors (including competitors)

who have a vulnerability protection or mitigation product.

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