PT-2021-17983 · Unknown · Eibport V3

Psytester · Published 2021-09-09 · Updated 2021-09-20 · CVE-2021-28913

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions: eibPort V3 versions prior to 3.9.1

Description: The issue allows unauthenticated attackers to access the /webif/SecurityModule to validate the hard-coded unique 'eibPort String', which acts as the root SSH key passphrase. 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 restricting access to the /webif/SecurityModule endpoint until a patch is available. Avoid using the hard-coded eibPort String as the root SSH key passphrase in the affected versions.

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2021-28913

Affected Products

Eibport V3

References · 4

• https://osv.dev/vulnerability/CVE-2021-28913 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28913 · Security Note
• https://t.me/cibsecurity/28621 · Telegram Post
• https://psytester.github.io/CVE-2021-28913 · Note