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Cisco ASA VPN Failover Command Injection Vulnerability

Information

Severity

Severity

Critical

Family

Family

CISCO

CVSSv2 Base

CVSSv2 Base

9.0

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

7 years ago

Modified

Modified

3 years ago

Summary

The VPN of Cisco ASA is prone to a command injection vulnerability.

Insight

Insight

A vulnerability in the VPN code of Cisco ASA Software could allow an authenticated, remote attacker to submit configuration commands to the standby unit via the failover interface. As result, an attacker could be able to take full control of both the active and standby failover units. The vulnerability is due to improper implementation of the internal filter for packets coming from an established VPN tunnel. An attacker could exploit this vulnerability by sending crafted packets directed to the failover interface IP address.

Affected Software

Affected Software

Version 7.2, 8.2, 8.3, 8.4, 8.6, 9.0, 9.1, 9.2 and 9.3

Detection Method

Detection Method

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

Solution

Solution

Apply the appropriate updates from Cisco.

Common Vulnerabilities and Exposures (CVE)