CVE-2018-10301

WD Instagram Feed Premium <= 1.3.0 - Cross-Site Scripting

2018-04-23 00:00

Strategic Overview

Status: Patched in 1.3.1
Affected Plugin: WD Instagram Feed Premium
Affected Version: <= 1.3.0
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2018-10301

View all WD Instagram Feed Premium vulnerabilities

At a glance

CVE-2018-10301 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the WD Instagram Feed Premium WordPress plugin, affecting versions <= 1.3.0. 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 1.3.1; sites on affected versions should update now. Disclosed April 2018, reported by Karan Saini.

Vulnerability Overview

Cross-site scripting (XSS) vulnerability in the Web-Dorado Instagram Feed WD plugin before 1.3.1 Premium for WordPress allows remote attackers to inject arbitrary web script or HTML by passing payloads in a comment on an Instagram post.

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 WD Instagram Feed Premium <= 1.3.0 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 WD Instagram Feed Premium the fix is 1.3.1: builds <= 1.3.0 are affected, anything from 1.3.1 onward is not.

Remediation

Update to version 1.3.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WD Instagram Feed Premium: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WD Instagram Feed Premium 1.3.1 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2018-10301 https://www.wordfence.com/threat-intel/vulnerabilities/id/4a2c11bb-88cb-43ae-b9b7-5b6262a315e0 https://nvd.nist.gov/vuln/detail/CVE-2018-10301

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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