medium
5.3
CWE
20 358
Advisory Published
Updated

CVE-2021-34790: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Application Level Gateway Bypass Vulnerabilities

First published: Wed Oct 27 2021(Updated: )

Multiple vulnerabilities in the Application Level Gateway (ALG) for the Network Address Translation (NAT) feature of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass the ALG and open unauthorized connections with a host located behind the ALG. For more information about these vulnerabilities, see the Details section of this advisory. Note: These vulnerabilities have been publicly discussed as NAT Slipstreaming.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Adaptive Security Appliance<9.8.4.40
Cisco Firepower Threat Defense<6.4.0.12
Cisco Firepower Threat Defense>=6.5.0<6.6.5
Cisco Firepower Threat Defense>=6.7.0<6.7.0.2
Cisco Adaptive Security Appliance Software>=9.12.0<9.12.4.29
Cisco Adaptive Security Appliance Software>=9.13.0<9.14.2.15
Cisco Adaptive Security Appliance Software>=9.15.0<9.15.1.15
Cisco Asa 5512-x Firmware=009.008
Cisco Asa 5512-x Firmware=009.015
Cisco Asa 5512-x
Cisco Asa 5505 Firmware=009.008
Cisco Asa 5505 Firmware=009.015
Cisco Asa 5505
Cisco Asa 5515-x Firmware=009.008
Cisco Asa 5515-x Firmware=009.015
Cisco Asa 5515-x
Cisco Asa 5525-x Firmware=009.008
Cisco Asa 5525-x Firmware=009.015
Cisco Asa 5525-x
Cisco Asa 5545-x Firmware=009.008
Cisco Asa 5545-x Firmware=009.015
Cisco Asa 5545-x
Cisco Asa 5555-x Firmware=009.008
Cisco Asa 5555-x Firmware=009.015
Cisco Asa 5555-x
Cisco Asa 5580 Firmware=009.008
Cisco Asa 5580 Firmware=009.015
Cisco Asa 5580
Cisco Asa 5585-x Firmware=009.008
Cisco Asa 5585-x Firmware=009.015
Cisco Asa 5585-x

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is CVE-2021-34790?

    CVE-2021-34790 is a vulnerability in the Application Level Gateway (ALG) for the Network Address Translation (NAT) feature of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software.

  • How does CVE-2021-34790 affect Cisco ASA Software?

    CVE-2021-34790 affects Cisco ASA Software versions up to 9.8.4.40, 9.12.x, 9.13.x, 9.14.x, and 9.15.x.

  • How does CVE-2021-34790 affect Cisco Firepower Threat Defense?

    CVE-2021-34790 affects Cisco Firepower Threat Defense versions up to 6.4.0.12, 6.5.0 to 6.6.5, and 6.7.0 to 6.7.0.2.

  • What is the severity of CVE-2021-34790?

    CVE-2021-34790 has a severity rating of 5.3 (Medium).

  • Where can I find more information about CVE-2021-34790?

    You can find more information about CVE-2021-34790 in the Cisco Security Advisory at https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-natalg-bypass-cpKGqkng.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203