ZDI-08-022: Apple Safari WebKit PCRE Handling Integer Overflow 
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-022
April 16, 2008

-- CVE ID:
CVE-2008-1026

-- Affected Vendors:
Apple

-- Affected Products:
Apple Safari

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 6031. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- 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.

The specific flaw exists in the regular expression compiler
(JavaScriptCore/pcre/pcre_compile.cpp) in WebKit. When nesting regular
expressions with large repetitions, a heap overflow occurs resulting in
a condition allowing the execution of arbitrary code.

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

http://support.apple.com/kb/HT1467

-- Disclosure Timeline:
2008-03-27 - Vulnerability reported to vendor
2008-04-16 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Charlie Miller, Jake Honoroff and Mark Daniel

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