The remote Debian host is missing a security-related update.
Two vulnerabilities were discovered in Drupal, a fully-featured content management framework. The Common Vulnerabilities and Exposures project identifies the following issues : - CVE-2015-7943 Samuel Mortenson and Pere Orga discovered that the overlay module does not sufficiently validate URLs prior to displaying their contents, leading to an open redirect vulnerability. More information can be found at https://www.drupal.org/SA-CORE-2015-004 - CVE-2017-6922 Greg Knaddison, Mori Sugimoto and iancawthorne discovered that files uploaded by anonymous users into a private file system can be accessed by other anonymous users leading to an access bypass vulnerability. More information can be found at https://www.drupal.org/SA-CORE-2017-003
Upgrade the drupal7 packages. For the oldstable distribution (jessie), these problems have been fixed in version 7.32-1+deb8u9. For the stable distribution (stretch), these problems have been fixed in version 7.52-2+deb9u1. For the stable distribution (stretch), CVE-2015-7943 was already fixed before the initial release.