Synopsis
The remote Debian host is missing a security update.
Description
A possible regression was found in the recent security update for libphp-phpmailer, announced as DLA 1591-1. During backporting a new variable have accidentally introduced to a conditional statement from a much later version. Thanks to Salvatore Bonaccorso (carnil) for reporting this.
For Debian 8 'Jessie', this problem has been fixed in version 5.2.9+dfsg-2+deb8u5.
We recommend that you upgrade your libphp-phpmailer packages.
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Upgrade the affected libphp-phpmailer package.