CVE-2018-0546

WP All Import <= 3.4.5 - Cross-Site Scripting

2018-03-08 00:00

Strategic Overview

Status: Patched in 3.4.6
Affected Plugin: WP All Import – Drag & Drop Import for CSV, XML, Excel & Google Sheets
Affected Version: < 3.4.6
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2018-0546

View all WP All Import – Drag & Drop Import for CSV, XML, Excel & Google Sheets vulnerabilities

At a glance

CVE-2018-0546 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the WP All Import WordPress plugin, affecting versions < 3.4.6. 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 3.4.6; sites on affected versions should update now. Disclosed March 2018, reported by Mardan Muhidin.

Vulnerability Overview

Cross-site scripting vulnerability in WP All Import plugin prior to version 3.4.6 for WordPress allows an attacker to inject arbitrary web script or HTML via unspecified vectors.

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 All Import < 3.4.6 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 All Import the fix is 3.4.6: builds < 3.4.6 are affected, anything from 3.4.6 onward is not.

Remediation

Update to version 3.4.6, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WP All Import: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP All Import 3.4.6 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2018-0546 https://www.wordfence.com/threat-intel/vulnerabilities/id/406fe34a-0991-4653-9924-b6586091d7df https://nvd.nist.gov/vuln/detail/CVE-2018-0546

Related records

Same weakness class

Other vulnerabilities in WP All Import – Drag & Drop Import for CSV, XML, Excel & Google Sheets

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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