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.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Contivity | Nortel | 2.1.7 (including) | 2.1.7 (including) |
| Contivity | Nortel | 3.00 (including) | 3.00 (including) |
| Contivity | Nortel | 3.01 (including) | 3.01 (including) |
| Contivity | Nortel | 4.91 (including) | 4.91 (including) |
| Contivity | Nortel | 5.01 (including) | 5.01 (including) |
References
- http://secunia.com/advisories/12881
- http://securitytracker.com/id?1011846
- http://www.osvdb.org/11002
- http://www.securityfocus.com/bid/11495
- http://www130.nortelnetworks.com/cgi-bin/eserv/cs/main.jsp?level=6\u0026category=8\u0026subcategory=6\u0026subtype=\u0026DocumentOID=276620\u0026RenditionID=REND159588
- https://exchange.xforce.ibmcloud.com/vulnerabilities/17812
- http://secunia.com/advisories/12881
- http://securitytracker.com/id?1011846
- http://www.osvdb.org/11002
- http://www.securityfocus.com/bid/11495
- http://www130.nortelnetworks.com/cgi-bin/eserv/cs/main.jsp?level=6\u0026category=8\u0026subcategory=6\u0026subtype=\u0026DocumentOID=276620\u0026RenditionID=REND159588
- https://exchange.xforce.ibmcloud.com/vulnerabilities/17812