Package : symfony Version : 2.3.21+dfsg-4+deb8u6 CVE ID : CVE-2019-18886 CVE-2019-18887 CVE-2019-18888
Multiple vulnerabilities have been found in the Symfony PHP framework which could lead to a timing attack/information leak, argument injection and code execution via unserialization.
For Debian 8 "Jessie", these problems have been fixed in version 2.3.21+dfsg-4+deb8u6.
We recommend that you upgrade your symfony packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS