BugTraq
NGS00057 Technical Advisory: Apple Mac OS X ImageIO Integer Overflow Jun 28 2011 02:18PM
Research@NGSSecure (research ngssecure com)
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Summary
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Name: Apple Mac OS X ImageIO TIFF Integer Overflow
Release Date: 28 June 2011
Reference: NGS00057
Discoverer: Dominic Chell <dominic.chell (at) ngssecure (dot) com [email concealed]>
Vendor: Apple
Vendor Reference: 142522746
Systems Affected: Mac OS X v10.6 through v10.6.6, Mac OS X Server v10.6 through v10.6.6. This issue does not affect systems prior to Mac OS X v10.6
Risk: High
Status: Published

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TimeLine
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Discovered: 8 March 2011
Released: 8 March 2011
Approved: 8 March 2011
Reported: 8 March 2011
Fixed: 21 March 2011
Published: 28 June 2011

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Description
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A heap overflow is caused by a signedness vulnerability within copyImageBlockSetTiff().
The crash occurs within any application using the framework, including Preview, QuickLook, Safari & Mail.

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Technical Details
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exception=EXC_BAD_ACCESS:signal=11:is_exploitable=yes:instruction_disass
embly=movdqa %xmm1,CONSTANT(%rdi,%rcx):instruction_address=0x00007fffffe0088c:access_
type=write:access_address=0x00000001159d0000:
Crash accessing invalid address. Consider running it again with libgmalloc(3) to see if the log changes.
Test case was copyImageBlockSetTiff

Process: qlmanage [4763]
Path: /System/Library/Frameworks/QuickLook.framework/Versions/A/Resources/quic
klookd.app/Contents/MacOS/qlmanage
Identifier: qlmanage
Version: ??? (???)
Code Type: X86-64 (Native)
Parent Process: exc_handler [4762]

PlugIn Path: /usr/bin/qlmanage
PlugIn Identifier: qlmanage
PlugIn Version: ??? (???)

Date/Time: 2011-03-07 21:47:33.598 +0000
OS Version: Mac OS X 10.6.6 (10J567)
Report Version: 6

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000001159d0000
Crashed Thread: 6

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Fix Information
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http://support.apple.com/kb/HT4581

NGS Secure Research
http://www.ngssecure.com

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