CyberSecBulletin
CVE-2022-22808NVD status: Modified

EcoStruxure EV Charging Expert (formerly known…: Cross-Site Request Forgery

Published Updated By the CyberSecBulletin desk

CVE-2022-22808 is a high-severity cross-site request forgery vulnerability in EcoStruxure EV Charging Expert (formerly known as EVlink Load Management System): (HMIBSCEA53D1EDB, HMIBSCEA53D1EDS, HMIBSCEA53D1EDM, HMIBSCEA53D1EDL, HMIBSCEA53D1ESS, HMIBSCEA53D1ESM, HMIBSCEA53D1EML) (All Versions prior to SP8 (Version 01) V4.0.0.13), with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. There is no confirmed exploitation so far. EPSS estimates a 0.68% chance of exploitation within 30 days, higher than 53% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Hmibscea53d1edb Firmware to 4.0.0.13 or a later version.
  2. Update Hmibscea53d1eds Firmware to 4.0.0.13 or a later version.
  3. Update Hmibscea53d1edm Firmware to 4.0.0.13 or a later version.
  4. Read the advisory on download.schneider-electric.com for workarounds and exact fixed builds.
  5. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
  6. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
EcoStruxure EV Charging Expert (formerly known as EVlink Load Management System): (HMIBSCEA53D1EDB, HMIBSCEA53D1EDS, HMIBSCEA53D1EDM, HMIBSCEA53D1EDL, HMIBSCEA53D1ESS, HMIBSCEA53D1ESM, HMIBSCEA53D1EML) (All Versions prior to SP8 (Version 01) V4.0.0.13)EcoStruxure EV Charging Expert (formerly known as EVlink Load Management System): (HMIBSCEA53D1EDB, HMIBSCEA53D1EDS, HMIBSCEA53D1EDM, HMIBSCEA53D1EDL, HMIBSCEA53D1ESS, HMIBSCEA53D1ESM, HMIBSCEA53D1EML) (All Versions prior to SP8 (Version 01) V4.0.0.13)Not specified in the recordNot stated
Schneider ElectricHmibscea53d1edb Firmwarebefore 4.0.0.134.0.0.13
Schneider ElectricHmibscea53d1eds Firmwarebefore 4.0.0.134.0.0.13
Schneider ElectricHmibscea53d1edm Firmwarebefore 4.0.0.134.0.0.13
Schneider ElectricHmibscea53d1edl Firmwarebefore 4.0.0.134.0.0.13
Schneider ElectricHmibscea53d1ess Firmwarebefore 4.0.0.134.0.0.13
Schneider ElectricHmibscea53d1esm Firmwarebefore 4.0.0.134.0.0.13
Schneider ElectricHmibscea53d1eml Firmwarebefore 4.0.0.134.0.0.13

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
RequiredA user must take an action such as opening a file or link.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.18.8HighNVD
CVSS 2.06.8MediumNVD

Official description

A CWE-352: Cross-Site Request Forgery (CSRF) exists that could cause a remote attacker to gain unauthorized access to the product when conducting cross-domain attacks based on same-origin policy or cross-site request forgery protections bypass. Affected Product: EcoStruxure EV Charging Expert (formerly known as EVlink Load Management System): (HMIBSCEA53D1EDB, HMIBSCEA53D1EDS, HMIBSCEA53D1EDM, HMIBSCEA53D1EDL, HMIBSCEA53D1ESS, HMIBSCEA53D1ESM, HMIBSCEA53D1EML) (All Versions prior to SP8 (Version 01) V4.0.0.13)

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Cross-Site Request Forgery

The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

How developers prevent this class of flaw

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, use anti-CSRF packages such as the OWASP CSRFGuard. Another example is the ESAPI Session Management control, which includes a component for CSRF.
  • Ensure that the application is free of cross-site scripting issues (CWE-79), because most CSRF defenses can be bypassed using attacker-controlled script.
  • Generate a unique nonce for each form, place the nonce into the form, and verify the nonce upon receipt of the form. Be sure that the nonce is not predictable (CWE-330).

More Cross-Site Request Forgery vulnerabilities (CWE-352)

Timeline

  1. CVE record published.
  2. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in EcoStruxure EV Charging Expert (formerly known as EVlink Load Management System): (HMIBSCEA53D1EDB, HMIBSCEA53D1EDS, HMIBSCEA53D1EDM, HMIBSCEA53D1EDL, HMIBSCEA53D1ESS, HMIBSCEA53D1ESM, HMIBSCEA53D1EML) (All Versions prior to SP8 (Version 01) V4.0.0.13)

All EcoStruxure EV Charging Expert (formerly known as EVlink Load Management System): (HMIBSCEA53D1EDB, HMIBSCEA53D1EDS, HMIBSCEA53D1EDM, HMIBSCEA53D1EDL, HMIBSCEA53D1ESS, HMIBSCEA53D1ESM, HMIBSCEA53D1EML) (All Versions prior to SP8 (Version 01) V4.0.0.13) vulnerabilities

Recent Cross-Site Request Forgery vulnerabilities

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