CVE Vulnerabilities

CVE-2021-34790

Improperly Implemented Security Check for Standard

Published: Oct 27, 2021 | Modified: Nov 21, 2024
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu

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.

Weakness

The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique.

Affected Software

Name Vendor Start Version End Version
Adaptive_security_appliance Cisco * 9.8.4.40 (excluding)
Firepower_threat_defense Cisco * 6.4.0.12 (excluding)
Firepower_threat_defense Cisco 6.5.0 (including) 6.6.5 (excluding)
Firepower_threat_defense Cisco 6.7.0 (including) 6.7.0.2 (excluding)
Adaptive_security_appliance_software Cisco 9.12.0 (including) 9.12.4.29 (excluding)
Adaptive_security_appliance_software Cisco 9.13.0 (including) 9.14.2.15 (excluding)
Adaptive_security_appliance_software Cisco 9.15.0 (including) 9.15.1.15 (excluding)

References