A vulnerability in the deterministic random bit generator (DRBG), also known as pseudorandom number generator (PRNG), in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software for Cisco ASA 5506-X, ASA 5508-X, and ASA 5516-X Firewalls could allow an unauthenticated, remote attacker to cause a cryptographic collision, enabling the attacker to discover the private key of an affected device. This vulnerability is due to insufficient entropy in the DRBG for the affected hardware platforms when generating cryptographic keys. An attacker could exploit this vulnerability by generating a large number of cryptographic keys on an affected device and looking for collisions with target devices. A successful exploit could allow the attacker to impersonate an affected target device or to decrypt traffic secured by an affected key that is sent to or from an affected target device.
References
| Link | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa5500x-entropy-6v9bHVYP | Vendor Advisory |
Configurations
Configuration 1 (hide)
| AND |
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History
05 Apr 2023, 14:26
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* cpe:2.3:h:cisco:asa_5508-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asa_5506w-x:-:*:*:*:*:*:*:* cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* cpe:2.3:h:cisco:asa_5506h-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asa_5516-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asa_5506-x:-:*:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
| First Time |
Cisco asa 5516-x
Cisco asa 5506w-x Cisco Cisco asa 5508-x Cisco asa 5506-x Cisco adaptive Security Appliance Cisco firepower Threat Defense Cisco asa 5506h-x |
|
| CWE | CWE-331 | |
| References | (CISCO) https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa5500x-entropy-6v9bHVYP - Vendor Advisory |
23 Mar 2023, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2023-03-23 17:15
Updated : 2023-12-10 15:01
NVD link : CVE-2023-20107
Mitre link : CVE-2023-20107
CVE.ORG link : CVE-2023-20107
JSON object : View
Products Affected
cisco
- asa_5516-x
- asa_5508-x
- firepower_threat_defense
- asa_5506w-x
- adaptive_security_appliance
- asa_5506-x
- asa_5506h-x