Description
BAB TECHNOLOGIE GmbH eibPort V3 prior version 3.9.1 allow unauthenticated attackers access to /tmp path which contains some sensitive data (e.g. device serial number). Having those info, a possible loginId can be self-calculated in a brute force attack against BMX interface. This is usable and part of an attack chain to gain SSH root access.
References
https://psytester.github.io/CVE-2021-28911
Third Party Advisory
https://psytester.github.io/CVE-2021-28911
Third Party Advisory
CVSS impact metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 · Critical
Information
Source identifier
Vulnerability status
Modified
Published
2021-09-09T18:15:08.873Z
5 years agoLast modified
2026-06-17T03:47:02.097Z
3 months ago