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Credit:
The information has been provided by ZeroDay Initiative.
The original article can be found at: http://www.zerodayinitiative.com/advisories/ZDI-07-005.html
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Affected Products:
* JDK and JRE version 5.0 Update 9 and earlier (all platforms)
* SDK and JRE version 1.4.2_12 and earlier (all platforms)
* SDK and JRE version 1.3.1_18 and earlier (all platforms)
The specific flaw exists during the parsing of GIF image components. When the image width in an image block of a valid GIF file is set to 0, the Java runtime will allocate the specified size but subsequently copy all data to the under allocated memory chunk. The overflow results in the corruption of multiple pointers, at least one of which is later dereferenced and can therefore result in execution of arbitrary code.
Vendor Response:
Sun has issued an update to correct this vulnerability. More details can be found at: http://www.sunsolve.sun.com/search/document.do?assetkey=1-26-102760-1
Disclosure Timeline:
2006.06.16 - Vulnerability reported to vendor
2006.12.18 - Digital Vaccine released to TippingPoint customers
2007.01.16 - Coordinated public release of advisory
CVE Information:
CVE-2007-0243
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