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Cisco ASA Challenge-Response Tunnel Group Selection Bypass Vulnerability

Information

Severity

Severity

Medium

Family

Family

CISCO

CVSSv2 Base

CVSSv2 Base

4.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:S/C:P/I:N/A:N

Solution Type

Solution Type

Vendor Patch

Created

Created

6 years ago

Modified

Modified

3 years ago

Summary

This host is running Cisco ASA Software and is prone to security bypass vulnerability.

Insight

Insight

The flaw is due to an improper implementation of the tunnel group selection when a user authenticates to the remote access VPN via the challenge-response mechanism.

Affected Software

Affected Software

Cisco ASA Software versions 8.2.x, 8.3.x, 8.4.x before 8.4(7.27), 8.6.x, 9.0.x before 9.0(4.34), 9.1.x before 9.1(5.100) and 9.2.x before 9.2(2.100).

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Upgrade to Cisco ASA Software version 8.4(7.27) or 9.0(4.34) or 9.1(5.100) or 9.2(2.100) or later.

Common Vulnerabilities and Exposures (CVE)