VDB-178680 · CVE-2021-22779 · SEVD-2021-194

Schneider Electric EcoStruxure Control Expert Modbus Communication authentication spoofing

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0	$0-$5k	0.00

A vulnerability, which was classified as critical, was found in Schneider Electric EcoStruxure Control Expert, EcoStruxure Process Expert, SCADAPack RemoteConnect for x70, Modicon M580 CPU and Modicon M340 CPU (SCADA Software). Affected is an unknown code block of the component Modbus Communication Handler. The manipulation with an unknown input leads to a authentication spoofing vulnerability. CWE is classifying the issue as CWE-290. This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 07/15/2021 as SEVD-2021-194. The advisory is shared for download at download.schneider-electric.com. This vulnerability is traded as CVE-2021-22779. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

Productinfo

Type

SCADA Software

Vendor

Schneider Electric

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Authentication spoofing
CWE: CWE-290 / CWE-287
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/06/2021 🔍
07/15/2021 +189 days 🔍
07/15/2021 +0 days 🔍
07/18/2021 +3 days 🔍

Sourcesinfo

Vendor: schneider-electric.com

Advisory: SEVD-2021-194
Status: Confirmed

CVE: CVE-2021-22779 (🔍)

Entryinfo

Created: 07/15/2021 08:38
Updated: 07/18/2021 16:08
Changes: 07/15/2021 08:38 (37), 07/15/2021 08:39 (1), 07/18/2021 16:08 (2)
Complete: 🔍