QID 317094

Date Published: 2021-10-28

QID 317094: Cisco Adaptive Security Appliance (ASA) Software Application Level Gateway v Bypass Vulnerabilities (cisco-sa-natalg-bypass-cpKGqkng)

Multiple vulnerabilities in the Application Level Gateway (ALG) for the Network Address Translation (NAT) feature of Cisco Adaptive Security Appliance (ASA) Software
could allow an unauthenticated, remote attacker to bypass the ALG and open unauthorized connections with a host located behind the ALG.

Affected Products
This vulnerability affected Cisco ASA Software if they were running following vulnerable versions:
Prior to 9.8.4.40
From 9.12 Prior to 9.12.4.18
From 9.13 Prior to 9.14.2.15
From 9.15 Prior to 9.15.1.15

QID Detection Logic (Authenticated):
The check matches Cisco ASA OS version retrieved via Unix Auth using "version" command.

A successful exploit could allow the attacker to open unauthorized connections to the remote host and undertake actions leveraging that host.

  • CVSS V3 rated as Medium - 5.3 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution

    Customers are advised to refer to cisco-sa-natalg-bypass-cpKGqkng for more information.

    Vendor References

    CVEs related to QID 317094

    CVE-2021-34790 | CVE-2021-34791 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-natalg-bypass-cpKGqkng URL Logo tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-natalg-bypass-cpKGqkng
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