Multiple vulnerabilities have been reported in Firefox, which can be exploited by malicious people to conduct spoofing attacks, manipulate certain data, bypass certain security restrictions, and compromise a user's system.
1) A boundary error in the processing of XBM images can be exploited to cause a heap based buffer overflow via a specially crafted image.
Successful exploitation allows execution of arbitrary code.
2) An error in the processing of Unicode sequences with "zero-width non-joiner" characters can be exploited to corrupt the stack and cause a crash.
Successful exploitation may allow execution of arbitrary code.
3) An input validation error in the processing of headers passed to the "XMLHttpRequest" object can be exploited to inject arbitrary HTTP requests.
4) An unspecified error where a XBL control which implements an internal interface can spoof DOM objects.
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Subject: Firefox Multiple Vulnerabilities
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