CVE-2016-10985

Echo Sign < 1.2 - Reflected Cross-Site Scripting

2016-04-21 00:00

Strategic Overview

Status: Patched in 1.2
Affected Plugin: Echo Sign
Affected Version: < 1.2
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2016-10985

At a glance

CVE-2016-10985 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Echo Sign WordPress plugin, affecting versions < 1.2. 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 1.2; sites on affected versions should update now. Disclosed April 2016, reported by Rahul Pratap Singh.

Vulnerability Overview

The echosign plugin before 1.2 for WordPress has XSS via the templates/add_templates.php id parameter.

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 Echo Sign < 1.2 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 Echo Sign the fix is 1.2: builds < 1.2 are affected, anything from 1.2 onward is not.

Remediation

Update to version 1.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Echo Sign: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Echo Sign 1.2 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2016-10985 https://www.wordfence.com/threat-intel/vulnerabilities/id/a3302110-60ae-4ad1-8a8c-3511027da3a8 https://nvd.nist.gov/vuln/detail/CVE-2016-10985

Related records

Same weakness class

6.1CVE-2016-10984: Echo Sign < 1.2 Reflected Cross-Site ScriptingCVE-2016-10984

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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