Key management errors in Cisco Systems, Inc products - CVE-2023-20107
Published: March 23, 2023
Vulnerability identifier: #VU73975
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-20107
CWE-ID: CWE-320
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a cryptographic collision.
The vulnerability exists due to insufficient entropy in the deterministic random bit generator (DRBG) for the affected hardware platforms when generating cryptographic keys. A remote attacker can generate a large number of cryptographic keys, discover the private key and decrypt traffic that is sent to or from the target device.
Affected software
Adaptive Security Appliance 5506-X
Adaptive Security Appliance 5506H-X
Adaptive Security Appliance 5506W-X
Adaptive Security Appliance 5508-X
Adaptive Security Appliance 5516-X
Cisco Firewall Threat Defense (FTD)
Cisco Adaptive Security Appliance (ASA)
Adaptive Security Appliance 5506H-X
Adaptive Security Appliance 5506W-X
Adaptive Security Appliance 5508-X
Adaptive Security Appliance 5516-X
Cisco Firewall Threat Defense (FTD)
Cisco Adaptive Security Appliance (ASA)
How to mitigate CVE-2023-20107
Install updates from vendor's website.
Cisco Firewall Threat Defense (FTD) - update to 6.4.0
Cisco Adaptive Security Appliance (ASA) - update to 9.12.1
Cisco Adaptive Security Appliance (ASA) - update to 9.12.1