PT-2021-3891 · Schneider Electric · Pro-Face Blue+1

Published 2021-01-12 · Updated 2021-02-12 · CVE-2020-28221

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions EcoStruxure Operator Terminal Expert (affected versions not specified) Pro-face BLUE (affected versions not specified)

Description The issue is related to insufficient input validation in the Ethernet Download feature of the affected software, which could allow a remote attacker to execute arbitrary code. This is due to a CWE-20: Improper Input Validation vulnerability.

Recommendations For EcoStruxure Operator Terminal Expert, disable the Ethernet Download feature until a patch is available. For Pro-face BLUE, restrict access to the Ethernet Download feature to minimize the risk of exploitation. As a temporary workaround, consider disabling the Ethernet Download feature on both products until a patch is available.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2021-04273

CVE-2020-28221

Affected Products

Ecostruxure Operator Terminal Expert

Pro-Face Blue

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2020-28221 · Security Note
• https://bdu.fstec.ru/vul/2021-04273 · Security Note
• https://se.com/ww/en/download/document/SEVD-2021-012-01 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-28221 · Vendor Advisory
• https://t.me/cvenotify/9895 · Telegram Post
• https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD-2021-012-01_EcoStruxure_Operator_Terminal_Expert_and_Pro-face_BLUE_Security_Notification.pdf&p_Doc_Ref=SEVD-2021-012-01 · Note
• https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD-2021-012-01_EcoStruxure_Operator_Terminal_Expert_and_Pro-face_BLUE_Security_Notification.pdf&p_Doc_Ref=SEVD-2021-012-01 · Note