Provide references for CVE-2015-8877.
Where can I find more information about CVE-2015-8877?
References are available at: https://github.com/libgd/libgd/issues/173, http://rhn.redhat.com/errata/RHSA-2016-2750.html, https://github.com/libgd/libgd/commit/4751b606fa38edc456d627140898a7ec679fcc24, http://www.php.net/ChangeLog-5.php, https://bugs.php.net/bug.php?id=70064, http://www.ubuntu.com/usn/USN-2987-1, http://www.debian.org/security/2016/dsa-3587.