A critical vulnerability was identified in Java Web Start, which may allow an untrusted application the ability to elevate its privileges. The flaw resides in the Java Web Start launcher ("javaws.exe" for Windows and "javaws" for Solaris and Linux) when handling a specially crafted "property" tag in a "JNLP" file, which may be exploited, via a specially crafted web page, to bypass the default "sandbox" security policy and read/write arbitrary files on a vulnerable system (trojan, malware ...).
All major web browsers could be used as an attack vector (Internet Explorer, Mozilla, Opera ...).
Credits
Vulnerability reported by Jouko Pynnonen
ChangeLog
2005-03-18 : Initial release
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