PT-2021-7538 · Wibu Systems · Codemeter

Published 2021-06-10 · Updated 2022-10-06 · CVE-2021-20093

Positive Technologies (AI Summary)

CVSS v3.1

9.4

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Wibu-Systems CodeMeter versions prior to 7.21a

Description A buffer over-read issue exists, allowing an unauthenticated remote attacker to disclose heap memory contents or crash the CodeMeter Runtime Server. The vulnerability can be exploited by a remote attacker using a specially crafted TCP/IP packet, potentially leading to information disclosure or denial of service.

Recommendations For versions prior to 7.21a, update to version 7.21a or later to resolve the issue. As a temporary workaround, consider restricting access to the CodeMeter Runtime Server to minimize the risk of exploitation.

Exploit

Fix

Buffer Over-read

Out of bounds Read

Weakness Enumeration

CWE-126

CWE-125

Related Identifiers

BDU:2022-07414

CVE-2021-20093

Affected Products

Codemeter

References · 8

• 🔥 https://tenable.com/security/research/tra-2021-24 · Exploit
• https://osv.dev/vulnerability/CVE-2021-20093 · Vendor Advisory
• https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-210423-01.pdf · Vendor Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-675303.pdf · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-20093 · Security Note
• https://bdu.fstec.ru/vul/2022-07414 · Security Note
• https://us-cert.cisa.gov/ics/advisories/icsa-21-210-02 · Note
• https://cisa.gov/uscert/ics/advisories/icsa-21-210-02 · Note