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Secunia Advisory SA15548

Nortel VPN Routers IKE Packet Handling Denial of Service
Secunia Advisory SA15548
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Release Date 2005-05-30
Last Update 2005-07-06
   
Popularity 11,957 views
Comments 0 comments

Criticality level Moderately criticalModerately critical
Impact DoS
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Operating System
Nortel VPN Routers
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2005-1802 CVSS available in Customer Area
  

Description

NTA-Monitor has reported a vulnerability in Nortel VPN Routers, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error in the handling of IKE packets and can be exploited via a specially crafted IKE packet containing a malformed ISAKMP header.

Successful exploitation causes the VPN router to crash or reboot.

The vulnerability has been reported in the 600, 1010, 1050, 1100, 1600, 1700, 1740, 2600, 2700, 4500, 4600, and 5000 models.


Solution
Upgrade to version 5.05.202.
Further details available in Customer Area

Provided and/or discovered by
Roy Hills, NTA-Monitor.

Changelog
Further details available in Customer Area

Original Advisory
Nortel Bulletin 2005006047:
http://www130.nortelnetworks.com/cgi-bin/eserv/cs/main.jsp?cscat=SECUREADVISORY

NTA-Monitor:
http://www.nta-monitor.com/news/vpn-flaws/nortel/vpn-router-dos/

Deep Links
Links available in Customer Area


Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Nortel VPN Routers IKE Packet Handling Denial of Service
 
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