A vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Sun Java Web Start. User interaction is required to exploit this vulnerability in that the target must visit a malicious page. The specific flaw exists in the writeManifest() method of the CacheEntry class. A directory traversal flaw in this method allows the creation of arbitrary files on the target system. After the file has been created, a call to Runtime.getRuntime.exec() can be used to execute the file.
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