CVE-2020-16134 Information

Description

An issue was discovered on Swisscom Internet Box 2 Internet Box Standard Internet Box Plus prior to 10.04.38 Internet Box 3 prior to 11.01.20 and Internet Box light prior to 08.06.06. Given the (user-configurable) credentials for the local Web interface or physical access to a device’s plus or reset button an attacker can create a user with elevated privileges on the Sysbus-API. This can then be used to modify local or remote SSH access thus allowing a login session as the superuser.

CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://www.swisscom.ch https://www.swisscom.ch/content/dam/swisscom/de/about/nachhaltigkeit/digitale-schweiz/sicherheit/bug-bounty/files/cve-2020-16134.txt

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.0