CVE-2017-18519

WP Customer Area <= 7.4.2 - Cross-Site Scripting

2017-11-22 00:00

Strategic Overview

Status: Patched in 7.4.3
Affected Plugin: WP Customer Area
Affected Version: < 7.4.3
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2017-18519

View all WP Customer Area vulnerabilities

At a glance

CVE-2017-18519 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the WP Customer Area WordPress plugin, affecting versions < 7.4.3. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 7.4.3; sites on affected versions should update now. Disclosed November 2017.

Vulnerability Overview

The customer-area plugin before 7.4.3 for WordPress has XSS via admin pages.

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.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in WP Customer Area < 7.4.3 takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For WP Customer Area the fix is 7.4.3: builds < 7.4.3 are affected, anything from 7.4.3 onward is not.

Remediation

Update to version 7.4.3, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WP Customer Area: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP Customer Area 7.4.3 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2017-18519 https://www.wordfence.com/threat-intel/vulnerabilities/id/ec015f49-cdb6-4a08-81cd-6fa505086537 https://nvd.nist.gov/vuln/detail/CVE-2017-18519

Related records

Same weakness class

Other vulnerabilities in WP Customer Area

CVSS Vector

6.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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