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Nortel VPN Routers IKE Packet Handling Denial of Service
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Secunia Advisory:
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SA15548
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Release Date:
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2005-05-30
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Last Update:
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2005-07-06
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | Nortel VPN Routers
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| | CVE reference: | CVE-2005-1802 (Secunia mirror)
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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.
The vendor recommends upgrading to version 5.05.202 instead of 5.05.200 due to a problem introduced in 5.05.200.
Or install the following patched versions.
-- Version 4.06.225 --
Update to 4.06.226.
-- Version 4.75.184 --
Update to 4.75.185.
-- Version 4.76.165 --
Update to 4.76.166.
-- Version 4.85.206 --
Update to 4.85.208.
-- Version 4.90.315 --
Update to 4.90.316.
-- Version 5.00.302 --
Update to 5.00.303.
Provided and/or discovered by:
Roy Hills, NTA-Monitor.
Changelog:
2005-06-02: Added CVE reference.
2005-07-06: Update "Solutions" and "Original Advisory" sections.
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/
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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3 Related Secunia Security Advisories
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1. Nortel VPN Router Default User Accounts and Missing Authentication Checks
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2. Nortel Products OpenSSL Vulnerability
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3. Nortel Networks Products ICMP Handling Vulnerabilities
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