2178 : Avaya Cajun Switch Negative Integer Handling Remote DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
15	881	over 8 years ago	over 3 years ago	1 times	80%

Timeline

Discovery Date	Disclosure Date
2003-06-03	2003-06-18

Description

Avaya Cajun switches contain a flaw with firmware versions up to and including 3.x that may allow a malicious attacker to cause a Denial of Service. The switch does not properly handle traffic to port 4000 and it may cause the switch to stop responding and eventually reset.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service
Impact: Loss of Availability

Technical

By connecting to tcp port 4000 on the switch and sending at least five
bytes, of which the first four represent a negative integer will cause the
switch to stall, after some time the switch reboots. Example:

sq5bpf@hash:~$ printf "x80dupa"|nc -v -v -v -n 192.168.66.3 4000
(UNKNOWN) [192.168.66.3] 4000 (?) open
[the connections stalls]

The time the switch needs to become operational again is about 30 seconds,
after this time the attack can be repeated.

Solution

Upgrade to software version 4.0 or higher as it has been reported to have fixed the issue. If unable to upgrade then it is advised to filter access to the device so that only trusted hosts can establish TCP connections.

Products

Avaya Inc.	Cajun	G700
		P130
		P330

References

ISS X-Force ID: 12356
Bugtraq ID: 7961
Secunia Advisory ID: 9075
Vendor Specific Advisory URL: http://support.avaya.com/japple/css/japple?PAGE=avaya.css.OpenPage&temp.template.name=SecurityAdvisory

Tools & Filters

	11759

Credit

Unknown or Incomplete

CVSSv2 Score

We currently have no CVSS2 data on this vulnerability. Feel free to suggest it.

Blogs

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