CVE-2020-27633

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2020-27633
In FNET 4.6.3, TCP ISNs are improperly random.

9.1 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.cisa.gov/news-events/ics-advisories/icsa-21-042-01 Third Party Advisory US Government Resource
https://www.forescout.com Third Party Advisory
https://www.forescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks/ Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:butok:fnet:4.6.3:*:*:*:*:*:*:*
History

13 Oct 2023, 15:12

Type Values Removed Values Added
CWE CWE-330
References (MISC) https://www.cisa.gov/news-events/ics-advisories/icsa-21-042-01 - (MISC) https://www.cisa.gov/news-events/ics-advisories/icsa-21-042-01 - Third Party Advisory, US Government Resource
References (MISC) https://www.forescout.com - (MISC) https://www.forescout.com - Third Party Advisory
References (MISC) https://www.forescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks/ - (MISC) https://www.forescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks/ - Third Party Advisory
CPE cpe:2.3:a:butok:fnet:4.6.3:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 9.1
First Time Butok
Butok fnet

10 Oct 2023, 17:52

Type Values Removed Values Added
New CVE
Information

Published : 2023-10-10 17:15

Updated : 2023-12-10 15:14

NVD link : CVE-2020-27633

Mitre link : CVE-2020-27633

CVE.ORG link : CVE-2020-27633

JSON object : View

Products Affected

butok

  • fnet
CWE
CWE-330

Use of Insufficiently Random Values