CVE-2021-4355

Welcart e-Commerce < 2.2.8 - Missing Capabilities Check to Information Disclosure

2021-08-06 00:00
Jerome Bruandet

Strategic Overview

Status
Patched in 2.2.8
Affected Plugin
Welcart e-Commerce
Affected Version
< 2.2.8
CVSS
7.5High
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2021-4355
View all Welcart e-Commerce vulnerabilities

At a glance

CVE-2021-4355 is a high-severity Missing Authorization vulnerability in the Welcart e-Commerce WordPress plugin, affecting versions < 2.2.8. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires no authentication. The issue is fixed in version 2.2.8; sites on affected versions should update now. Disclosed August 2021, reported by Jerome Bruandet.

Vulnerability Overview

The Welcart e-Commerce plugin for WordPress is vulnerable to authorization bypass due to missing capability checks on the download_orderdetail_list(), change_orderlist(), and download_member_list() functions called via admin_init hooks in versions up to, and including, 2.2.7. This makes it possible for unauthenticated attackers to download lists of members, products and orders.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality.

CWE-862: Missing Authorization

Welcart e-Commerce < 2.2.8 carries this weakness at download_orderdetail_list(), and reaching it takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Welcart e-Commerce the fix is 2.2.8: builds < 2.2.8 are affected, anything from 2.2.8 onward is not.

Remediation

Update to version 2.2.8, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Welcart e-Commerce 2.2.8 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-4355https://www.wordfence.com/threat-intel/vulnerabilities/id/671f5ba5-1f18-49fa-aa97-eaebdb3417bbhttps://nvd.nist.gov/vuln/detail/CVE-2021-4355

Related records

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