Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6, and 8.5.x before 8.5.1 allows remote attackers to execute arbitrary code because of an issue affecting multiple subsystems with default or common module configurations.
http://www.securityfocus.com/bid/103534
http://www.securitytracker.com/id/1040598
https://badpackets.net/over-100000-drupal-websites-vulnerable-to-drupalgeddon-2-cve-2018-7600/
https://blog.appsecco.com/remote-code-execution-with-drupal-core-sa-core-2018-002-95e6ecc0c714
https://github.com/a2u/CVE-2018-7600
https://github.com/g0rx/CVE-2018-7600-Drupal-RCE
https://greysec.net/showthread.php?tid=2912&pid=10561
https://groups.drupal.org/security/faq-2018-002
https://lists.debian.org/debian-lts-announce/2018/03/msg00028.html
https://research.checkpoint.com/uncovering-drupalgeddon-2/
https://twitter.com/arancaytar/status/979090719003627521
https://twitter.com/RicterZ/status/979567469726613504
https://twitter.com/RicterZ/status/984495201354854401
https://www.debian.org/security/2018/dsa-4156
https://www.drupal.org/sa-core-2018-002
https://www.exploit-db.com/exploits/44448/
https://www.exploit-db.com/exploits/44449/
https://www.exploit-db.com/exploits/44482/
https://www.synology.com/support/security/Synology_SA_18_17
https://www.tenable.com/blog/critical-drupal-core-vulnerability-what-you-need-to-know
Source: MITRE
Published: 2018-03-29
Updated: 2019-03-01
Type: CWE-20
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL