Incorrect authorization in Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software

1) Incorrect authorization

EUVDB-ID: #VU69201

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-20928

CWE-ID: CWE-863 - Incorrect Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to establish a connection as a different user.

The vulnerability exists due to a flaw in the authorization verifications during the VPN authentication flow. A remote attacker can send a specially crafted packet during a VPN authentication and establish a VPN connection with access privileges from a different user.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Adaptive Security Appliance (ASA): 9.6.0.128 - 9.17.1.7

Cisco Firepower Threat Defense (FTD): 9.6.0.128 - 9.17.1.7

CPE2.3

• cpe:2.3:h:cisco_systems:asa:9.6.0.128:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:asa:9.6.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:asa:9.6.1.3:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:asa:9.6.1.5:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:asa:9.6.1.10:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:asa:9.6.1.11:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:asa:9.6.1.12:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:asa:9.6.1.19:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:asa:9.6.2:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:asa:9.6.2.1:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_ftd:9.6.0.128:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-vp-authz-N2GckjN6

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.