CVE-2015-20106

ClickBank Affiliate Ads <= 1.20 - Cross-Site Scripting

2015-05-06 00:00

Strategic Overview

Status: Patched in 1.35
Affected Plugin: Affiliate Ads for cbAds.com
Affected Version: <= 1.20
CVSS: 4.8Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2015-20106

View all Affiliate Ads for cbAds.com vulnerabilities

At a glance

CVE-2015-20106 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Affiliate Ads for cbAds.com WordPress plugin, affecting versions <= 1.20. It carries a CVSS score of 4.8 (reachable over the network; low attack complexity). The issue is fixed in version 1.35; sites on affected versions should update now. Disclosed May 2015, reported by Kaustubh G. Padwad.

Vulnerability Overview

The ClickBank Affiliate Ads WordPress plugin through 1.20 does not escape its settings, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed.

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

Reaching this weakness in Affiliate Ads for cbAds.com <= 1.20 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 Affiliate Ads for cbAds.com the fix is 1.35: builds <= 1.20 are affected, anything from 1.35 onward is not.

Remediation

Update to version 1.35, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Affiliate Ads for cbAds.com: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Affiliate Ads for cbAds.com 1.35 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2015-20106 https://www.wordfence.com/threat-intel/vulnerabilities/id/3eff7a6f-7098-4298-b399-91974b16fda2 https://nvd.nist.gov/vuln/detail/CVE-2015-20106

Related records

Same weakness class

8.8CVE-2015-20105: ClickBank Affiliate Ads CSRFCVE-2015-20105

CVSS Vector

4.8

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

Base

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

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