CVE-2021-27420 Information

Description

GE UR firmware versions prior to version 8.1x web server task does not properly handle receipt of unsupported HTTP verbs resulting in the web server becoming temporarily unresponsive after receiving a series of unsupported HTTP requests. When unresponsive the web server is inaccessible. By itself this is not particularly significant as the relay remains effective in all other functionality and communication channels.

CVSS Vector

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

Reference

https://www.cisa.gov/uscert/ics/advisories/icsa-21-075-02 https://www.gegridsolutions.com/Passport/Login.aspx

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

LOW

Base Severity

5.3