(Apple Issues Fix) Libpng 'pngrtran' Offset Buffer Overflow May Let Remote Users Deny Service or Execute Code Via Affected Applications
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SecurityTracker Alert ID: 1010913 |
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SecurityTracker URL: http://securitytracker.com/id/1010913
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CVE Reference:
CAN-2002-1363
(Links to External Site)
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Date: Aug 10 2004
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Impact:
Denial of service via network, Execution of arbitrary code via network
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Fix Available: Yes Vendor Confirmed: Yes
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Description:
A buffer overflow vulnerability was reported in libpng. A remote user may be able to cause an application that uses the affected library code to crash or execute arbitrary code.
In May 2004, the vendor reported that libpng does not properly calculate certain offsets.
The flaw resides in 'pngrtran.c'.
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Impact:
A remote user may be able to cause an application that uses the affected library code to crash or execute arbitrary code. The specific impact depends on the application that uses the affected library.
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Solution:
Apple has released a fix for Mac OS X as part of Security Update 2004-08-09, available via the Software Update pane in System Preferences or Apple's Software Downloads web site at:
http://www.apple.com/support/downloads/
For Mac OS X v10.3.4 "Panther" and Mac OS X Server v10.3.4:
Click on: Security Update 2004-08-09 (10.3.4)
The download file is named: "SecUpd2004-08-09Pan.dmg"
Its SHA-1 digest is: f65ee21e4ca2990aafbb3e5a34469107de2eefb8
For Mac OS X v10.2.8 "Jaguar" and Mac OS X Server v10.2.8:
Click on: Security Update 2004-08-09 (10.2.8)
The download file is named: "SecUpd2004-08-09Jag.dmg"
Its SHA-1 digest is: 6a7edb319c321320fd756e910a6cf0ce1537c1aa
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Vendor URL: www.libpng.org/pub/png/libpng.html (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
UNIX (OS X)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Mon, 9 Aug 2004 16:20:37 -0700
Subject: APPLE-SA-2004-08-09 Security Update 2004-08-09
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
APPLE-SA-2004-09-09 Security Update 2004-08-09
Security Update 2004-08-09 is now available and delivers security
enhancements for the following system versions:
* Mac OS X v10.3.4 "Panther"
* Mac OS X Server v10.3.4 "Panther"
* Mac OS X v10.2.8 "Jaguar"
* Mac OS X Server v10.2.8 "Jaguar"
The following components are updated:
Component: libpng (Portable Network Graphics)
CVE-IDs: CAN-2002-1363, CAN-2004-0421, CAN-2004-0597,
CAN-2004-0598, CAN-2004-0599
Impact: Malicious png images can cause application crashes and could
execute arbitrary code
Description: A number of buffer overflows, null pointer dereferences
and integer overflows have been discovered in the reference library
for reading and writing PNG images. These vulnerabilities have been
corrected in libpng which is used by the CoreGraphics and AppKit
frameworks in Mac OS X. After installing this update, applications
that use the PNG image format via these frameworks will be protected
against these flaws.
================================================
Security Update 2004-08-09 may be obtained from the Software Update
pane in System Preferences, or Apple's Software Downloads web site:
For Mac OS X v10.3.4 "Panther" and Mac OS X Server v10.3.4
==========================================================
http://www.apple.com/support/downloads/
Click on: Security Update 2004-08-09 (10.3.4)
The download file is named: "SecUpd2004-08-09Pan.dmg"
Its SHA-1 digest is: f65ee21e4ca2990aafbb3e5a34469107de2eefb8
For Mac OS X v10.2.8 "Jaguar" and Mac OS X Server v10.2.8
=========================================================
http://www.apple.com/support/downloads/
Click on: Security Update 2004-08-09 (10.2.8)
The download file is named: "SecUpd2004-08-09Jag.dmg"
Its SHA-1 digest is: 6a7edb319c321320fd756e910a6cf0ce1537c1aa
Information will also be posted to the Apple Product Security
web site:
http://www.apple.com/support/security/security_updates.html
This message is signed with Apple's Product Security PGP key,
and details are available at:
http://www.apple.com/support/security/security_pgp.html
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