CVE-2023-20107

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa5500x-entropy-6v9bHVYP	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:a:cisco:adaptive_security_appliance::::::::
	cpe:2.3:a:cisco:firepower_threat_defense::::::::

OR	cpe:2.3:h:cisco:asa_5506-x:-:::::::*
	cpe:2.3:h:cisco:asa_5506h-x:-:::::::*
	cpe:2.3:h:cisco:asa_5506w-x:-:::::::*
	cpe:2.3:h:cisco:asa_5508-x:-:::::::*
	cpe:2.3:h:cisco:asa_5516-x:-:::::::*

History

No history.

Information

Published : 2023-03-23 17:15

Updated : 2024-02-28 20:13

NVD link : CVE-2023-20107

Mitre link : CVE-2023-20107

CVE.ORG link : CVE-2023-20107

JSON object : View

Products Affected

cisco

adaptive_security_appliance
asa_5506-x
asa_5506h-x
firepower_threat_defense
asa_5516-x
asa_5506w-x
asa_5508-x

CWE

CWE-331

Insufficient Entropy

CWE-332

Insufficient Entropy in PRNG

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