Description
Drupal Core is prone to a mail header injection vulnerability. Exploiting this issue could allow an attacker to use a vulnerable Drupal site to send unwanted emails. Drupal Core versions 4.6.x ranging from 4.6.0 and up to and including 4.6.5 are vulnerable.
Remediation
Update to Drupal Core version 4.6.6 or latest
References
Related Vulnerabilities
Jboss EAP Deserialization of Untrusted Data Vulnerability (CVE-2017-12149)
WordPress Plugin Advanced AJAX Page Loader Arbitrary File Upload (2.7.6)
Oracle JRE CVE-2013-2461 Vulnerability (CVE-2013-2461)
Drupal Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-9449)
WordPress Plugin PI Button includes Backdoor [Only if downloaded via the vendor website] (3.3.3)