CVE-2017-6920
CRITICALDrupal 8.0.0-8.3.3 - Remote Code Execution via PECL YAML Parser
Title source: llmDescription
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 certain operations.
References (3)
Core 3
Core References
Patch, Vendor Advisory x_refsource_confirm
https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/99211
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1038781
Scores
CVSS v3
9.8
EPSS
0.6615
EPSS Percentile
98.5%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-19
Status
published
Products (3)
drupal/core
8.0 - 8.3.4Packagist
drupal/drupal
8.0 - 8.3.4Packagist
drupal/drupal
8.0.0 - 8.3.4
Published
Aug 06, 2018
Tracked Since
Feb 18, 2026