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CVE-2016-4567

Public exploit available. Not confirmed exploited in the wild yet. Fixed versions are out.

CVSS 3.06.1MediumEPSS percentile94th7.4% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
Public exploit: 2 sourcesFix5 products3 fixed builds listed below

Published Updated Sources: CVE.org, NVD, GitHub

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Npm MediaelementAffected: < 2.11.1Upgrade to: 2.11.1Stated by: GitHub advisory
  • Packagist contao-components/mediaelementAffected: ≥ 2.14.2, < 2.21.1Upgrade to: 2.21.1Stated by: GitHub advisory
  • Packagist contao/coreAffected: ≥ 3.0.0, < 3.5.15Upgrade to: 3.5.15Stated by: GitHub advisory
  • Mediaelementjs Mediaelement.jsAffected: ≤ 2.20.1Upgrade to: after 2.20.1Stated by: NVD
  • WordpressAffected: ≤ 4.5.1Upgrade to: after 4.5.1Stated by: NVD

Versions as the sources state them. Full version matrix after sign-in

Check it yourselfA free Nuclei and OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Discuss checks for your systems with a specialist. Scope is agreed before testing.

What it is

From the CVE record

Cross-site scripting (XSS) vulnerability in flash/FlashMediaElement.as in MediaElement.js before 2.21.0, as used in WordPress before 4.5.2, allows remote attackers to inject arbitrary web script or HTML via an obfuscated form of the jsinitfunction parameter, as demonstrated by "jsinitfunctio%gn."

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS94th
Public exploit
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

2 sources with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in
EPSS

7.4% chance of exploitation activity in the next 30 days, which ranks it in the 94th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

A public exploit existed 61 days before the patch.

  1. OpenVAS check added
  2. Patch availablerecord updated
  3. Public exploit / PoCsource: github-pocnuclei check added
  4. Publishedweakness classified, att&ck mapped

Affected products

And 1 more affected product. See all after sign-in

Scale

How widely the affected products are used. This is not a count of vulnerable hosts.

Estimate Public sources, each figure dated. How much of it is already patched is not known.

WordPress

Web

Usage: unknown. No public source measures this product yet.

Version split: unknown. No public source for this product.

Technical detail

CVSS 3.0 vector

Open in the CVSS calculator

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Scored 6.1 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction RequiredA user must click a link, open a file, or perform some action

Scope

  • Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)

Impact if exploited

  • Confidentiality LowSome restricted information is disclosed, but limited in scope
  • Integrity LowData modification is possible but limited in scope or consequence
  • Availability NoneNo availability impact

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 15 more references. See all after sign-in

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