CVE-2019-6340

HIGH severity · CVSS 8.1 · Insecure deserialization · actively exploited (CISA KEV)

8.1CVSS HIGH ● exploited

🔴 Actively exploited in the wild (CISA Known Exploited Vulnerabilities). Added to KEV 2022-03-25. US federal agencies must patch by 2022-04-15.

Summary

Some field types do not properly sanitize data from non-form sources in Drupal 8.5.x before 8.5.11 and Drupal 8.6.x before 8.6.10. This can lead to arbitrary PHP code execution in some cases. A site is only affected by this if one of the following conditions is met: The site has the Drupal 8 core RESTful Web Services (rest) module enabled and allows PATCH or POST requests, or the site has another web services module enabled, like JSON:API in Drupal 8, or Services or RESTful Web Services in Drupal 7. (Note: The Drupal 7 Services module itself does not require an update at this time, but you should apply other contributed updates associated with this advisory if Services is in use.)

Impact & exploitability

Attack vectorNetwork

Attack complexityHigh

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)94%

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

Affected products we track (1)

Drupal

Recommendation

This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.

Additional information

NVD record
https://www.exploit-db.com/exploits/46452/Patch
https://www.drupal.org/sa-core-2019-003Advisory
https://www.drupal.org/sa-core-2019-003Advisory
http://www.securityfocus.com/bid/107106Advisory
https://www.synology.com/security/advisory/Synology_SA_19_09Advisory
http://www.securityfocus.com/bid/107106Advisory
https://www.exploit-db.com/exploits/46459/Advisory
https://www.exploit-db.com/exploits/46510/Advisory