9980 : ZyXEL Prestige Router Packet Length Mismatch DoS
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Info

Last Modified
5 months ago

Percent Complete
100%

Disclosure
Dec 14, 2001

Discovery
Unknown

Dates

Exploit
Unknown

Solution
Unknown

Description

 ZyXel Prestige 1600 and 681 series DSL routers contains a flaw that may allow a remote denial of service. The issue is triggered when a remote attacker sends a malformed packet containing an IP length that is shorter than the actual packet size from a DSL interface, and will result in loss of availability for the device for a short period of time.

Classification

 Location: Remote/Network Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Exploit: Exploit Available
OSVDB: Web Related

Solution

 Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround:

Turn off routing and put device in bridging mode

Products
ZyXEL Communications Corporation
Watch-list
Prestige
Watch-list
 681
1600

References

Credit
  • Przemyslaw Frasunek - venglinBrand New Doo Doofreebsd.lublin.pl - Przemyslaw Frasunek

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