Denial of Service in ZyXEL prestige 642R w/ZyNOS v2.50(FA.1)

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Description:
A single jolt[1] packet will cause the router to stop passing traffic from the
internal network for exactly 30 seconds.

Affected versions:
ZyNOS S/W Version: V2.50(FA.1) | 1/22/2002 (and below)

Notes:
A friendly soul told us this affected other ZyXEL models as well, but we dont
have any around to test on.

References:
[1]: http://packetstorm.decepticons.org/exploits/DoS/jolt.c

Yours truly,
0x36

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