CVE-2020-14962

Final Tiles Gallery <= 3.4.18 - Authenticated Stored Cross-Site Scripting

2020-05-28 00:00

Strategic Overview

Status: Patched in 3.4.19
Affected Plugin: Image Photo Gallery Final Tiles Grid
Affected Version: <= 3.4.18
CVSS: 6.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2020-14962

View all Image Photo Gallery Final Tiles Grid vulnerabilities

At a glance

CVE-2020-14962 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Image Photo Gallery Final Tiles Grid WordPress plugin, affecting versions <= 3.4.18. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account. The issue is fixed in version 3.4.19; sites on affected versions should update now. Disclosed May 2020, reported by Ngo Van Thien.

Vulnerability Overview

Multiple XSS vulnerabilities in the Final Tiles Gallery plugin before 3.4.19 for WordPress allow remote attackers to inject arbitrary web script or HTML via the Title (aka imageTitle) or Caption (aka description) field of an image to wp-admin/admin-ajax.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 interaction from a victim user.

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

Reaching this weakness in Image Photo Gallery Final Tiles Grid <= 3.4.18 takes any authenticated account. 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 Image Photo Gallery Final Tiles Grid the fix is 3.4.19: builds <= 3.4.18 are affected, anything from 3.4.19 onward is not.

Remediation

Update to version 3.4.19, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Image Photo Gallery Final Tiles Grid: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Image Photo Gallery Final Tiles Grid 3.4.19 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-14962 https://www.wordfence.com/threat-intel/vulnerabilities/id/656bf2b4-1930-4e96-b92b-01593889a43f https://nvd.nist.gov/vuln/detail/CVE-2020-14962

Related records

Same weakness class

Other vulnerabilities in Image Photo Gallery Final Tiles Grid

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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