QID 317096

Date Published: 2021-10-28

QID 317096: Cisco Firepower Threat Defense (FTD) Software Application Level Gateway (ALG) Bypass Vulnerabilities (cisco-sa-natalg-bypass-cpKGqkng)

Multiple vulnerabilities in the Application Level Gateway (ALG) for the Network Address Translation (NAT) feature of Cisco Firepower Threat Defense 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 FTD Software if they were running following vulnerable versions:
Prior to 6.4.0.12
From 6.5.0 Prior to 6.6.5
From 6.7.0 Prior to 6.7.0.2

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

N/A

  • 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 317096

    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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