CVE-2011-5104

WP eCommerce < 3.8.7.2 - Stored Cross-Site Scripting

2011-11-21 00:00

Strategic Overview

Status: Patched in 3.8.7.2
Affected Plugin: WP eCommerce
Affected Version: < 3.8.7.2
CVSS: 5.3Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2011-5104

At a glance

CVE-2011-5104 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the WP eCommerce WordPress plugin, affecting versions < 3.8.7.2. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.8.7.2; sites on affected versions should update now. Disclosed November 2011.

Vulnerability Overview

Cross-site scripting (XSS) vulnerability in wpsc-admin/display-sales-logs.php in WP e-Commerce plugin 3.8.7.1 and possibly earlier for WordPress allows remote attackers to inject arbitrary web script or HTML via the custom_text parameter. NOTE: some of these details are obtained from third party information.

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, and no interaction from a victim user.

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

Reaching this weakness in WP eCommerce < 3.8.7.2 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 eCommerce the fix is 3.8.7.2: builds < 3.8.7.2 are affected, anything from 3.8.7.2 onward is not.

Remediation

Update to version 3.8.7.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WP eCommerce: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP eCommerce 3.8.7.2 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2011-5104 https://www.wordfence.com/threat-intel/vulnerabilities/id/2d1302c4-7aeb-49f4-aa11-2c0e08bd9c71 https://nvd.nist.gov/vuln/detail/CVE-2011-5104

Related records

Same weakness class

Other vulnerabilities in WP eCommerce

CVSS Vector

5.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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