CVE-2010-3977

CformsII <=11.5 - Cross-Site Scripting

2010-11-02 00:00

Strategic Overview

Status: Patched in 11.6.1
Affected Plugin: cformsII
Affected Version: <= 11.5
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2010-3977

At a glance

CVE-2010-3977 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the cformsII WordPress plugin, affecting versions <= 11.5. 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 11.6.1; sites on affected versions should update now. Disclosed November 2010.

Vulnerability Overview

Multiple cross-site scripting (XSS) vulnerabilities in wp-content/plugins/cforms/lib_ajax.php in cformsII(cforms 2) WordPress plugin 11.5 allow remote attackers to inject arbitrary web script or HTML via the (1) rs and (2) rsargs[] parameters.

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 cformsII <= 11.5 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 cformsII the fix is 11.6.1: builds <= 11.5 are affected, anything from 11.6.1 onward is not.

Remediation

Update to version 11.6.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to cformsII: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: cformsII 11.6.1 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2010-3977 https://www.wordfence.com/threat-intel/vulnerabilities/id/a32c6c0c-4a4a-44c7-9724-153467699b3a https://nvd.nist.gov/vuln/detail/CVE-2010-3977

Related records

Same weakness class

Other vulnerabilities in cformsII

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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