CVE-2021-20093

critical
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

A buffer over-read vulnerability exists in Wibu-Systems CodeMeter versions < 7.21a. An unauthenticated remote attacker can exploit this issue to disclose heap memory contents or crash the CodeMeter Runtime Server.

References

https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-210423-01.pdf

https://www.tenable.com/security/research/tra-2021-24

https://cert-portal.siemens.com/productcert/pdf/ssa-675303.pdf

Details

Source: MITRE

Published: 2021-06-16

Updated: 2021-08-05

Type: CWE-125

Risk Information

CVSS v2

Base Score: 6.4

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:P

Impact Score: 4.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Impact Score: 5.2

Exploitability Score: 3.9

Severity: CRITICAL

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:wibu:codemeter:*:*:*:*:*:*:*:* versions up to 7.21a (inclusive)

Tenable Plugins

View all (1 total)

IDNameProductFamilySeverity
150962CodeMeter Runtime Buffer Over-read (WIBU-210423-01)NessusSCADA
critical