Cisco VPN Concentrator IPSec Over TCP Remote Port Connectivity Vulnerability

BID:7516

Info

Cisco VPN Concentrator IPSec Over TCP Remote Port Connectivity Vulnerability

Bugtraq ID: 7516
Class: Design Error
CVE:
Remote: Yes
Local: No
Published: May 07 2003 12:00AM
Updated: May 07 2003 12:00AM
Credit: Vulnerability announced by Cisco.
Vulnerable: Cisco VPN 3080 Concentrator
Cisco VPN 3060 Concentrator
Cisco VPN 3030 Concentrator
Cisco VPN 3015 Concentrator
Cisco VPN 3005 Concentrator 4.0.1
Cisco VPN 3005 Concentrator 4.0
Cisco VPN 3005 Concentrator 3.6.7 D
Cisco VPN 3005 Concentrator 3.6.7 C
Cisco VPN 3005 Concentrator 3.6.7 B
Cisco VPN 3005 Concentrator 3.6.7 A
Cisco VPN 3005 Concentrator 3.6.7
Cisco VPN 3005 Concentrator 3.6.5
Cisco VPN 3005 Concentrator 3.6.3
Cisco VPN 3002 Hardware Client
Cisco VPN 3000 Concentrator 4.0
Cisco VPN 3000 Concentrator 3.6.7 D
Cisco VPN 3000 Concentrator 3.6.1
Cisco VPN 3000 Concentrator 3.6
Cisco VPN 3000 Concentrator 3.5.5
Cisco VPN 3000 Concentrator 3.5.4
Cisco VPN 3000 Concentrator 3.5.3
Cisco VPN 3000 Concentrator 3.5.2
Cisco VPN 3000 Concentrator 3.5.1
Cisco VPN 3000 Concentrator 3.5 (Rel)
Not Vulnerable: Cisco VPN 3000 Concentrator 3.1.4
Cisco VPN 3000 Concentrator 3.1.2
Cisco VPN 3000 Concentrator 3.1.1
Cisco VPN 3000 Concentrator 3.1 (Rel)
Cisco VPN 3000 Concentrator 3.1
Cisco VPN 3000 Concentrator 3.0.4
Cisco VPN 3000 Concentrator 3.0.3 (B)
Cisco VPN 3000 Concentrator 3.0.3 (A)
Cisco VPN 3000 Concentrator 3.0
Cisco VPN 3000 Concentrator 3.0
Cisco VPN 3000 Concentrator 2.5.2 (F)
Cisco VPN 3000 Concentrator 2.5.2 (D)
Cisco VPN 3000 Concentrator 2.5.2 (C)
Cisco VPN 3000 Concentrator 2.5.2 (B)
Cisco VPN 3000 Concentrator 2.5.2 (A)
Cisco VPN 3000 Concentrator 2.0

Discussion

Cisco VPN Concentrator IPSec Over TCP Remote Port Connectivity Vulnerability

It has been reported that Cisco VPN Concentrators do not properly handle incoming traffic on a port designed to send IPSec over TCP. An attacker may exploit this issue to gain access to the corresponding port of systems on the network behind the Concentrator.

Exploit / POC

Cisco VPN Concentrator IPSec Over TCP Remote Port Connectivity Vulnerability

No exploit is required for this vulnerability.

Solution / Fix

Cisco VPN Concentrator IPSec Over TCP Remote Port Connectivity Vulnerability

Solution:
Cisco has made fixes available to address this issue:


Cisco VPN 3002 Hardware Client

Cisco VPN 3080 Concentrator

Cisco VPN 3015 Concentrator

Cisco VPN 3060 Concentrator

Cisco VPN 3030 Concentrator

Cisco VPN 3000 Concentrator 3.5 (Rel)

Cisco VPN 3000 Concentrator 3.5.1

Cisco VPN 3000 Concentrator 3.5.2

Cisco VPN 3000 Concentrator 3.5.3

Cisco VPN 3000 Concentrator 3.5.4

Cisco VPN 3000 Concentrator 3.5.5

Cisco VPN 3000 Concentrator 3.6

Cisco VPN 3000 Concentrator 3.6.1

Cisco VPN 3005 Concentrator 3.6.3

Cisco VPN 3005 Concentrator 3.6.5

Cisco VPN 3000 Concentrator 3.6.7 D

Cisco VPN 3005 Concentrator 3.6.7 C

Cisco VPN 3005 Concentrator 3.6.7 A

Cisco VPN 3005 Concentrator 3.6.7 D

Cisco VPN 3005 Concentrator 3.6.7

Cisco VPN 3005 Concentrator 3.6.7 B

Cisco VPN 3000 Concentrator 4.0

Cisco VPN 3005 Concentrator 4.0

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