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Apple Safari WebKit PCRE Handling Integer Overflow Vulnerability
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SUMMARY
A 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.
DETAILS
Vulnerable Systems:
* Safari version 3.1
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.
Impact:
Viewing a maliciously crafted web page may lead to an unexpected
application termination or arbitrary code execution.
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1026>
CVE-2008-1026
Vendor Response:
Apple has issued an update to correct this vulnerability. More details can
be found at: <http://support.apple.com/kb/HT1467>
http://support.apple.com/kb/HT1467
Disclosure Timeline:
2008-03-27 - Vulnerability reported to vendor
2008-04-16 - Coordinated public release of advisory
ADDITIONAL INFORMATION
The information has been provided by <mailto:zdi-disclosures@3com.com>
The Zero Day Initiative (ZDI).
The original article can be found at:
<http://www.zerodayinitiative.com/advisories/ZDI-08-022>
http://www.zerodayinitiative.com/advisories/ZDI-08-022
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