CVE-2021-34645

Shopping Cart & eCommerce Store <= 5.1.0 - Cross-Site Request Forgery to Stored Cross-Site Scripting

2021-08-18 00:00
Xu-Liang Liao

Strategic Overview

Status
Patched in 5.1.5
Affected Plugin
Shopping Cart & eCommerce Store
Affected Version
<= 5.1.0
CVSS
8.8High
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2021-34645
View all Shopping Cart & eCommerce Store vulnerabilities

At a glance

CVE-2021-34645 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the Shopping Cart & eCommerce Store WordPress plugin, affecting versions <= 5.1.0. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 5.1.5; sites on affected versions should update now. Disclosed August 2021, reported by Xu-Liang Liao.

Vulnerability Overview

The Shopping Cart & eCommerce Store WordPress plugin is vulnerable to Cross-Site Request Forgery via the save_currency_settings function found in the ~/admin/inc/wp_easycart_admin_initial_setup.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 5.1.0.

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. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in Shopping Cart & eCommerce Store <= 5.1.0 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For Shopping Cart & eCommerce Store the fix is 5.1.5: builds <= 5.1.0 are affected, anything from 5.1.5 onward is not.

Remediation

Update to version 5.1.5, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Shopping Cart & eCommerce Store: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Shopping Cart & eCommerce Store 5.1.5 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-34645https://www.wordfence.com/threat-intel/vulnerabilities/id/d20ffc7c-0e12-45ec-940f-a42655093021https://nvd.nist.gov/vuln/detail/CVE-2021-34645

Related records

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