CVE-2019-14799

FV Flowplayer Video Player <= 7.3.13.727 - Unauthenticated Stored Cross-Site Scripting

2019-05-20 00:00

Strategic Overview

Status: Patched in 7.3.14.727
Affected Plugin: FV Flowplayer Video Player
Affected Version: <= 7.3.13.727
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2019-14799

View all FV Flowplayer Video Player vulnerabilities

At a glance

CVE-2019-14799 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the FV Flowplayer Video Player WordPress plugin, affecting versions <= 7.3.13.727. 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 7.3.14.727; sites on affected versions should update now. Disclosed May 2019, reported by WebARX Security.

Vulnerability Overview

The FV Flowplayer Video Player plugin before 7.3.14.727 for WordPress allows email subscription XSS.

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 FV Flowplayer Video Player <= 7.3.13.727 takes no account at all. 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 FV Flowplayer Video Player the fix is 7.3.14.727: builds <= 7.3.13.727 are affected, anything from 7.3.14.727 onward is not.

Remediation

Update to version 7.3.14.727, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: FV Flowplayer Video Player 7.3.14.727 closes this, and updating the plugin is the step that ends it.

Firewall
Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2019-14799 https://www.wordfence.com/threat-intel/vulnerabilities/id/bcad7322-a5d9-4d72-9983-276f9c05c27d https://nvd.nist.gov/vuln/detail/CVE-2019-14799

Related records

Same weakness class

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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