CVE-2021-28911

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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 10.0 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

10.0^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://psytester.github.io/CVE-2021-28911	Third Party Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:bab-technologie:eibport_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:bab-technologie:eibport:v3:*:*:*:*:*:*:*

Information

Published : 2021-09-09 11:15

Updated : 2021-09-20 13:37

NVD link : CVE-2021-28911

Mitre link : CVE-2021-28911

JSON object : View

CWE

CWE-863

Incorrect Authorization

CWE-307

Improper Restriction of Excessive Authentication Attempts

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Products Affected

bab-technologie

eibport_firmware
eibport

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