Pierluigi Paganini
October 19, 2018
The development team of the Drupal content management system addressed several vulnerabilities in version 7 and 8, including some flaws that could be exploited for remote code execution.
Drupal team fixed a critical vulnerability that resides in the Contextual Links module, that fails to properly validate requested contextual links. The flaw could be exploited by an attacker with an account with the “access contextual links” permission for a remote code execution,
“The Contextual Links module doesn’t sufficiently validate the requested contextual links.” reads the security advisory.
“This vulnerability is mitigated by the fact that an attacker must have a role with the permission “access contextual links”.”
Another critical vulnerability fixed by the development team is an injection issue that resides in the DefaultMailSystem::mail() function. The root cause of the bug is the lack of sanitization of some variables for shell arguments when sending emails.
“When sending email some variables were not being sanitized for shell arguments, which could lead to remote code execution.” continues the advisory.
The remaining vulnerabilities addressed in the CMS have been assigned a “moderately critical” rating, they include a couple of open redirect bugs and an access bypass issue related to content moderation.
The vulnerabilities have been addressed with the release of Drupal 7.60, 8.6.2 and 8.5.8.
Drupal team urges users to install security updates as soon as possible, there is the concrete risk that threat actors in the wild will start to exploit flaw in massive hacking campaigns.
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(Security Affairs – Drupal, hacking)
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