PT-2020-16948 · Schneider Electric · Modicon M221

Published 2020-12-11 · Updated 2022-02-03 · CVE-2020-28214

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Modicon M221 (all versions)

Description A vulnerability exists that could allow an attacker to pre-compute the hash value using dictionary attack techniques such as rainbow tables, effectively disabling the protection that an unpredictable salt would provide. This issue is related to the use of a one-way hash with a predictable salt.

Recommendations For Modicon M221, consider implementing an unpredictable salt to prevent pre-computation of hash values. As a temporary workaround, restrict access to sensitive areas where the hash is used until a more secure hashing mechanism is implemented.

Fix

Weakness Enumeration

CWE-760

Related Identifiers

CVE-2020-28214

Affected Products

Modicon M221

References · 29

• https://se.com/ww/en/download/document/SEVD-2020-315-05 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-28214 · Security Note
• https://t.me/cibsecurity/19963 · Telegram Post
• https://t.me/cibsecurity/20192 · Telegram Post
• https://t.me/cibsecurity/19884 · Telegram Post
• https://t.me/cibsecurity/19864 · Telegram Post
• https://t.me/cibsecurity/20020 · Telegram Post
• https://t.me/cibsecurity/19980 · Telegram Post
• https://t.me/cibsecurity/19824 · Telegram Post
• https://t.me/cibsecurity/20172 · Telegram Post
• https://t.me/cibsecurity/19943 · Telegram Post
• https://t.me/cibsecurity/19904 · Telegram Post
• https://t.me/cvenotify/7047 · Telegram Post
• https://t.me/cibsecurity/19784 · Telegram Post
• https://t.me/cibsecurity/20116 · Telegram Post