VDB-179344 · CVE-2021-22727 · SEVD-2021-194-06

Schneider Electric EVlink City/EVlink Parking/EVlink Smart Wallbox prior R8 V3.4.0.1 Web Server entropy

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.
2.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Schneider Electric EVlink City, EVlink Parking and EVlink Smart Wallbox and classified as problematic. Affected by this vulnerability is an unknown functionality of the component Web Server. Executing a manipulation can lead to entropy. The identification of this vulnerability is CVE-2021-22727. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Schneider Electric EVlink City, EVlink Parking and EVlink Smart Wallbox (SCADA Software). This vulnerability affects an unknown code of the component Web Server. The manipulation with an unknown input leads to a entropy vulnerability. The CWE definition for the vulnerability is CWE-331. The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others. As an impact it is known to affect confidentiality.

The weakness was shared 07/22/2021 as SEVD-2021-194-06. The advisory is shared for download at download.schneider-electric.com. This vulnerability was named CVE-2021-22727. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.001.

Upgrading to version R8 V3.4.0.1 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

SCADA Software

Vendor

Schneider Electric

Name

License

commercial

Website

Vendor: https://www.schneider-electric.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.6
VulDB Meta Temp Score: 2.5

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
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: Entropy
CWE: CWE-331 / CWE-330 / CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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: 🔍

Upgrade: EVlink City/EVlink Parking/EVlink Smart Wallbox R8 V3.4.0.1

Timelineinfo

01/06/2021 🔍
07/22/2021 +196 days 🔍
07/22/2021 +0 days 🔍
07/26/2021 +4 days 🔍

Sourcesinfo

Vendor: schneider-electric.com

Advisory: SEVD-2021-194-06
Status: Confirmed

CVE: CVE-2021-22727 (🔍)
GCVE (CVE): GCVE-0-2021-22727
GCVE (VulDB): GCVE-100-179344

Entryinfo

Created: 07/22/2021 05:57
Updated: 07/26/2021 10:20
Changes: 07/22/2021 05:57 (39), 07/26/2021 10:20 (2)
Complete: 🔍
Cache ID: 216::103