BID:28492

Apple Safari WebKit 'calculateCompiledPatternLength()' Remote Code Execution Vulnerability

Info

Apple Safari WebKit 'calculateCompiledPatternLength()' Remote Code Execution Vulnerability

Bugtraq ID:	28492
Class:	Boundary Condition Error
CVE:
Remote:	Yes
Local:	No
Published:	Mar 28 2008 12:00AM
Updated:	Mar 28 2008 05:19PM
Credit:	Charlie Miller
Vulnerable:	WebKit Open Source Project WebKit 0 Cosmicperl Directory Pro 10.0.3 Apple Safari 3.0.4 Beta for Windows Apple Safari 3.0.3 Beta for Windows Apple Safari 3.0.3 Beta Apple Safari 3.0.2 Beta for Windows Apple Safari 3.0.2 Beta Apple Safari 3.0.1 Beta for Windows Apple Safari 3.0.1 Beta Apple Safari 2.0.4 Apple Safari 2.0.3 Apple Safari 2.0.2 Apple Safari 2.0.1 + Apple Mac OS X 10.4.2 + Apple Mac OS X 10.4.1 + Apple Mac OS X 10.4 + Apple Mac OS X Server 10.4.2 + Apple Mac OS X Server 10.4.1 + Apple Mac OS X Server 10.4 Apple Safari 1.3.1 + Apple Mac OS X 10.3.9 Apple Safari 1.3 + Apple Mac OS X 10.3.9 Apple Safari 1.2.3 Apple Safari 1.2.2 Apple Safari 1.2.1 Apple Safari 1.2 + Apple Mac OS X 10.3.7 + Apple Mac OS X 10.3.7 + Apple Mac OS X 10.3.6 + Apple Mac OS X 10.3.6 + Apple Mac OS X 10.3.5 + Apple Mac OS X 10.3.5 + Apple Mac OS X 10.3.4 + Apple Mac OS X 10.3.4 + Apple Mac OS X 10.3.3 + Apple Mac OS X 10.3.3 + Apple Mac OS X 10.3.2 + Apple Mac OS X 10.3.2 + Apple Mac OS X 10.3.1 + Apple Mac OS X 10.3.1 + Apple Mac OS X 10.3 + Apple Mac OS X 10.3 + Apple Mac OS X 10.2.8 + Apple Mac OS X 10.2.8 + Apple Mac OS X 10.2.7 + Apple Mac OS X 10.2.7 + Apple Mac OS X 10.2.6 + Apple Mac OS X 10.2.6 + Apple Mac OS X 10.2.5 + Apple Mac OS X 10.2.5 + Apple Mac OS X 10.2.4 + Apple Mac OS X 10.2.4 + Apple Mac OS X 10.2.3 + Apple Mac OS X 10.2.3 + Apple Mac OS X 10.2.2 + Apple Mac OS X 10.2.2 + Apple Mac OS X 10.2.1 + Apple Mac OS X 10.2.1 + Apple Mac OS X 10.2 + Apple Mac OS X 10.2 + Apple Mac OS X Server 10.3.7 + Apple Mac OS X Server 10.3.6 + Apple Mac OS X Server 10.3.6 + Apple Mac OS X Server 10.3.5 + Apple Mac OS X Server 10.3.5 + Apple Mac OS X Server 10.3.4 + Apple Mac OS X Server 10.3.4 + Apple Mac OS X Server 10.3.3 + Apple Mac OS X Server 10.3.3 + Apple Mac OS X Server 10.3.2 + Apple Mac OS X Server 10.3.2 + Apple Mac OS X Server 10.3.1 + Apple Mac OS X Server 10.3.1 + Apple Mac OS X Server 10.3 + Apple Mac OS X Server 10.3 + Apple Mac OS X Server 10.2.8 + Apple Mac OS X Server 10.2.8 + Apple Mac OS X Server 10.2.7 + Apple Mac OS X Server 10.2.7 + Apple Mac OS X Server 10.2.6 + Apple Mac OS X Server 10.2.6 + Apple Mac OS X Server 10.2.5 + Apple Mac OS X Server 10.2.5 + Apple Mac OS X Server 10.2.4 + Apple Mac OS X Server 10.2.4 + Apple Mac OS X Server 10.2.3 + Apple Mac OS X Server 10.2.3 + Apple Mac OS X Server 10.2.2 + Apple Mac OS X Server 10.2.2 + Apple Mac OS X Server 10.2.1 + Apple Mac OS X Server 10.2.1 + Apple Mac OS X Server 10.2 + Apple Mac OS X Server 10.2 Apple Safari 1.1 Apple Safari 1.0 + Apple Mac OS X 10.2.8 + Apple Mac OS X 10.2.8 + Apple Mac OS X 10.2.7 + Apple Mac OS X 10.2.7 + Apple Mac OS X 10.2.6 + Apple Mac OS X 10.2.6 + Apple Mac OS X 10.2.5 + Apple Mac OS X 10.2.5 + Apple Mac OS X 10.2.4 + Apple Mac OS X 10.2.4 + Apple Mac OS X 10.2.3 + Apple Mac OS X 10.2.3 + Apple Mac OS X 10.2.2 + Apple Mac OS X 10.2.2 + Apple Mac OS X 10.2.1 + Apple Mac OS X 10.2.1 + Apple Mac OS X 10.2 + Apple Mac OS X 10.2 + Apple Mac OS X Server 10.2.8 + Apple Mac OS X Server 10.2.7 + Apple Mac OS X Server 10.2.7 + Apple Mac OS X Server 10.2.6 + Apple Mac OS X Server 10.2.6 + Apple Mac OS X Server 10.2.5 + Apple Mac OS X Server 10.2.5 + Apple Mac OS X Server 10.2.4 + Apple Mac OS X Server 10.2.4 + Apple Mac OS X Server 10.2.3 + Apple Mac OS X Server 10.2.3 + Apple Mac OS X Server 10.2.2 + Apple Mac OS X Server 10.2.2 + Apple Mac OS X Server 10.2.1 + Apple Mac OS X Server 10.2.1 + Apple Mac OS X Server 10.2 + Apple Mac OS X Server 10.2 Apple Safari 3.1 Apple Safari 3 Beta for Windows Apple Safari 3 Beta Apple Safari 3 Apple Mobile Safari 0 + Apple Mac OS X 10.4.2 + Apple Mac OS X 10.4.2 + Apple Mac OS X 10.4.1 + Apple Mac OS X 10.4.1 + Apple Mac OS X 10.4 + Apple Mac OS X 10.4 + Apple Mac OS X Server 10.4.2 + Apple Mac OS X Server 10.4.1 + Apple Mac OS X Server 10.4.1 + Apple Mac OS X Server 10.4 + Apple Mac OS X Server 10.4 Apple Mac OS X Server 10.5.2 Apple Mac OS X Server 10.5.1 Apple Mac OS X Server 10.4.11 Apple Mac OS X Server 10.4.10 Apple Mac OS X Server 10.4.9 Apple Mac OS X Server 10.4.8 Apple Mac OS X Server 10.4.7 Apple Mac OS X Server 10.4.6 Apple Mac OS X Server 10.4.5 Apple Mac OS X Server 10.4.4 Apple Mac OS X Server 10.4.3 Apple Mac OS X Server 10.4.2 Apple Mac OS X Server 10.4.1 Apple Mac OS X Server 10.4 Apple Mac OS X Server 10.3.9 Apple Mac OS X Server 10.3.8 Apple Mac OS X Server 10.3.7 Apple Mac OS X Server 10.3.6 Apple Mac OS X Server 10.3.5 Apple Mac OS X Server 10.3.4 Apple Mac OS X Server 10.3.3 Apple Mac OS X Server 10.3.2 Apple Mac OS X Server 10.3.1 Apple Mac OS X Server 10.3 Apple Mac OS X Server 10.2.8 Apple Mac OS X Server 10.2.7 Apple Mac OS X Server 10.2.6 Apple Mac OS X Server 10.2.5 Apple Mac OS X Server 10.2.4 Apple Mac OS X Server 10.2.3 Apple Mac OS X Server 10.2.2 Apple Mac OS X Server 10.2.1 Apple Mac OS X Server 10.2 Apple Mac OS X Server 10.1.5 Apple Mac OS X Server 10.1.4 Apple Mac OS X Server 10.1.3 Apple Mac OS X Server 10.1.2 Apple Mac OS X Server 10.1.1 Apple Mac OS X Server 10.1 Apple Mac OS X Server 10.0 Apple Mac OS X Server 10.5 Apple Mac OS X Preview.app 3.0.8 Apple Mac OS X 10.5.2 Apple Mac OS X 10.5.1 Apple Mac OS X 10.4.11 Apple Mac OS X 10.4.10 Apple Mac OS X 10.4.9 Apple Mac OS X 10.4.8 Apple Mac OS X 10.4.7 Apple Mac OS X 10.4.6 Apple Mac OS X 10.4.5 Apple Mac OS X 10.4.4 Apple Mac OS X 10.4.3 Apple Mac OS X 10.4.2 Apple Mac OS X 10.4.1 Apple Mac OS X 10.4 Apple Mac OS X 10.3.9 Apple Mac OS X 10.3.8 Apple Mac OS X 10.3.7 Apple Mac OS X 10.3.6 Apple Mac OS X 10.3.5 Apple Mac OS X 10.3.4 Apple Mac OS X 10.3.3 Apple Mac OS X 10.3.2 Apple Mac OS X 10.3.1 Apple Mac OS X 10.3 Apple Mac OS X 10.2.8 Apple Mac OS X 10.2.7 Apple Mac OS X 10.2.6 Apple Mac OS X 10.2.5 Apple Mac OS X 10.2.4 Apple Mac OS X 10.2.3 Apple Mac OS X 10.2.2 Apple Mac OS X 10.2.1 Apple Mac OS X 10.2 Apple Mac OS X 10.1.5 Apple Mac OS X 10.1.4 Apple Mac OS X 10.1.3 Apple Mac OS X 10.1.2 Apple Mac OS X 10.1.1 Apple Mac OS X 10.1 Apple Mac OS X 10.1 Apple Mac OS X 10.0.4 Apple Mac OS X 10.0.3 Apple Mac OS X 10.0.2 Apple Mac OS X 10.0.1 Apple Mac OS X 10.0 3 Apple Mac OS X 10.0 Apple Mac OS X 10.5

Not Vulnerable:

Discussion

Apple Safari WebKit 'calculateCompiledPatternLength()' Remote Code Execution Vulnerability

Apple Safari WebKit is prone to a remote code-execution vulnerability because it fails to adequately handle regular expressions with large, nested repetition counts.

An attacker can exploit this issue to execute arbitrary code in the context of the application. Failed exploit attempts will result in a denial-of-service condition.

Exploit / POC

Solution / Fix

Apple Safari WebKit 'calculateCompiledPatternLength()' Remote Code Execution Vulnerability

Solution:
A diff fix is available on the WebKit Open Source Project Trac website. Please see the references for more information.

References

Apple Safari WebKit 'calculateCompiledPatternLength()' Remote Code Execution Vulnerability

References:

Changeset 31388 Regular expressions with large nested repetition counts can have (WebKit Open Source Project)
Safari Homepage (Apple)
WebKit Homepage (WebKit Open Source Project)