PT-2021-17979 · Bab Technologie Gmbh · Eibport V3

Psytester · Published 2021-09-09 · Updated 2021-09-21 · CVE-2021-28909

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: BAB TECHNOLOGIE GmbH eibPort V3 versions prior to 3.9.1

Description: The issue allows unauthenticated attackers to access the login service at "/webif/SecurityModule" in a brute force attack. The password could be weak and the default username is known as admin. This can be part of an attack chain to gain SSH root access.

Recommendations: For versions prior to 3.9.1, update to version 3.9.1 or later to resolve the issue. As a temporary workaround, consider changing the default username and password, and restricting access to the "/webif/SecurityModule" endpoint to minimize the risk of exploitation.

Fix

Improper Restriction of Excessive Authentication Attempts

Weakness Enumeration

CWE-307

Related Identifiers

CVE-2021-28909

Affected Products

Eibport V3

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-28909 · Security Note
• https://osv.dev/vulnerability/CVE-2021-28909 · Vendor Advisory
• https://psytester.github.io/CVE-2021-28909 · Note
• https://t.me/cibsecurity/28628 · Telegram Post