Vulnerability CVE-2004-2621
Published: 2004-12-31   Modified: 2012-02-12

Description:
Nortel Contivity VPN Client 2.1.7, 3.00, 3.01, 4.91, and 5.01, when opening a VPN tunnel, does not check the gateway certificate until after a dialog box has been displayed to the user, which creates a race condition that allows remote attackers to perform a man-in-the-middle (MITM) attack.

CVSS2 => (AV:N/AC:H/Au:N/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4/10
4.9/10
4.9/10
Exploit range
Attack complexity
Authentication
Remote
High
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Nortel -> Contivity 

 References:
http://securitytracker.com/id?1011846
http://www.securityfocus.com/bid/11495
http://www130.nortelnetworks.com/cgi-bin/eserv/cs/main.jsp?level=6&category=8&subcategory=6&subtype=&DocumentOID=276620&RenditionID=REND159588
https://exchange.xforce.ibmcloud.com/vulnerabilities/17812
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