David Maciejak has reported a vulnerability in NetScreen Security Manager (NSM) which potentially can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an unspecified error in "guiSrv" and "devSrv". This can be exploited to crash the service via specially crafted packets sent to port 7800 and 7801. The service reportedly will automatically be restarted by the watchdog service when it crashes.
The vulnerability has been reported in NSM 2004 FP2 and FP3, and affects all versions prior to FP4r1 (2005.1).
Solution: Update to version FP4r1 (2005.1).
Provided and/or discovered by: David Maciejak
Original Advisory: Juniper Networks:
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Subject: Juniper NetScreen Security Manager Potential Denial of Service
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