CVE-2014-4847

Random Banner < 2.0 - Cross-Site Scripting

2014-06-29 00:00

Strategic Overview

Status: Patched in 2.0
Affected Plugin: Random Banner
Affected Version: < 2.0
CVSS: 7.1High
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2014-4847

At a glance

CVE-2014-4847 is a high-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Random Banner WordPress plugin, affecting versions < 2.0. It carries a CVSS score of 7.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.0; sites on affected versions should update now. Disclosed June 2014, reported by ACC3SS.

Vulnerability Overview

Cross-site scripting (XSS) vulnerability in the Random Banner plugin 1.3 for WordPress allows remote attackers to inject arbitrary web script or HTML via the buffercode_RBanner_url_banner1 parameter in an update action to wp-admin/options.php.

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 Random Banner < 2.0 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 Random Banner the fix is 2.0: builds < 2.0 are affected, anything from 2.0 onward is not.

Remediation

Update to version 2.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Random Banner: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Random Banner 2.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2014-4847 https://www.wordfence.com/threat-intel/vulnerabilities/id/416803bc-7851-4489-85f9-dbff0838d35b https://nvd.nist.gov/vuln/detail/CVE-2014-4847

Related records

Same weakness class

CVSS Vector

7.1

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

Base

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

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