CVE-2017-6920

Drupal core 8 before versions 8.3.4 allows remote attackers to execute arbitrary code due to the PECL YAML parser not handling PHP objects safely during…

published August 6, 2018

CVSS
—
EPSS
20%
Percentile
97.4
In the wild
Unconfirmed
What it is

⚠️ A crafty flaw in Drupal core 8 prior to version 8.3.4 lets remote attackers execute arbitrary code—like inviting someone to your house but forgetting to check their ID first! Picture hosting a dinner party where you trust everyone who walks through the door. Now, imagine one guest casually rearranging your kitchen while you're not looking—yikes! This vulnerability works similarly, allowing attackers to manipulate PHP objects without proper checks. An attacker could potentially take over your web application, executing any code they desire. This could lead to devastating consequences, like exposing sensitive data, defacing your site, or even launching further attacks. Protecting your application from this is absolutely essential!

Put simply

Picture hosting a dinner party where you trust everyone who walks through the door. Now, imagine one guest casually rearranging your kitchen while you're not looking—yikes! This vulnerability works similarly, allowing attackers to manipulate PHP objects without proper checks. This vulnerability arises from the PECL YAML parser in Drupal core 8 failing to handle PHP objects securely during certain operations, leading to arbitrary code execution.

What to do

An attacker could potentially take over your web application, executing any code they desire. This could lead to devastating consequences, like exposing sensitive data, defacing your site, or even launching further attacks. Protecting your application from this is absolutely essential! To mitigate this issue, upgrade to Drupal core version 8.3.4 or later as soon as possible. Regularly monitor your system for updates and ensure all components are secured against similar vulnerabilities. You've got this! Patch your Drupal installation today and keep your site safe and sound. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.20239 · 97.4th percentile
Published
2018-08-06T15:00Z
EPSS history
Timeline
  • 06 AUG 15:00Z
    Drupal core 8 before versions 8.3.4 allows remote attackers to execute arbitrary code due to the PECL YAML parser not handling PHP objects safely during…
    cvelistv5