PT-2022-9812 · Ge · Ge Ur Firmware

Published 2022-03-23 · Updated 2022-04-01 · CVE-2021-27420

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions GE UR firmware versions prior to 8.1x

Description The web server task in the affected firmware 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. However, the relay remains effective in all other functionality and communication channels.

Recommendations For GE UR firmware versions prior to 8.1x, update to version 8.1x or later to resolve the issue. As a temporary workaround, consider restricting access to the web server to minimize the risk of exploitation.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2021-27420

Affected Products

Ge Ur Firmware

References · 5

• https://osv.dev/vulnerability/CVE-2021-27420 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27420 · Security Note
• https://gegridsolutions.com/Passport/Login.aspx · Vendor Advisory
• https://cisa.gov/uscert/ics/advisories/icsa-21-075-02 · Note
• https://t.me/cvenotify/28293 · Telegram Post