CVE-2023-20107
Published on: Not Yet Published
Last Modified on: 04/05/2023 02:26:00 PM UTC
CVE-2023-20107 - advisory for cisco-sa-asa5500x-entropy-6v9bHVYP
Source: Mitre Source: NIST CVE.ORG Print: PDF
Certain versions of Adaptive Security Appliance from Cisco contain the following vulnerability:
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.
- CVE-2023-20107 has been assigned by
[email protected] to track the vulnerability - currently rated as HIGH severity. - The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
- Affected Vendor/Software: Cisco - Cisco Adaptive Security Appliance (ASA) Software version n/a
CVSS3 Score: 7.5 - HIGH
| Attack Vector ⓘ |
Attack Complexity |
Privileges Required |
User Interaction |
|---|---|---|---|
| NETWORK | LOW | NONE | NONE |
| Scope | Confidentiality Impact |
Integrity Impact |
Availability Impact |
| UNCHANGED | HIGH | NONE | NONE |
CVE References
| Description | Tags ⓘ | Link |
|---|---|---|
| Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Low-Entropy Keys Vulnerability | sec.cloudapps.cisco.com text/html |
CISCO 20230322 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Low-Entropy Keys Vulnerability |
Known Affected Configurations (CPE V2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Cisco | Adaptive Security Appliance | All | All | All | All |
| Hardware
| Cisco | Asa 5506-x | - | All | All | All |
| Hardware
| Cisco | Asa 5506h-x | - | All | All | All |
| Hardware
| Cisco | Asa 5506w-x | - | All | All | All |
| Hardware
| Cisco | Asa 5508-x | - | All | All | All |
| Hardware
| Cisco | Asa 5516-x | - | All | All | All |
| Application | Cisco | Firepower Threat Defense | All | All | All | All |
- cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:*:
- 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:-:*:*:*:*:*:*:*:
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*:
Social Mentions
| Source | Title | Posted (UTC) |
|---|---|---|
 @RedPacketSec |
Cisco ASA and FTD Software security bypass | CVE-2023-20107 - redpacketsecurity.com/cisco-asa-and-… #CVE #Vulnerability #OSINT #ThreatIntel #Cyber | 2023-03-23 10:05:23 |
| @CVEreport |
CVE-2023-20107 : A vulnerability in the deterministic random bit generator DRBG , also known as pseudorandom num… twitter.com/i/web/status/1… | 2023-03-23 16:52:13 |
 /r/netcve |
CVE-2023-20107 | 2023-03-23 17:38:56 |
| /r/blueteamsec |
Randomness of random in Cisco ASA - CVE-2023-20107 - It ended up with keygens to recover RSA keys, ECDSA keys and signatures nonces. | 2023-06-12 18:10:38 |
| /r/bag_o_news |
Randomness of random in Cisco ASA - CVE-2023-20107 - It ended up with keygens to recover RSA keys, ECDSA keys and signatures nonces. | 2023-06-13 17:38:34 |