mod_authz_svn in Apache Subversion 1.7.x before 1.7.21 and 1.8.x before 1.8.14, when using Apache httpd 2.4.x, does not properly restrict anonymous access, which allows remote anonymous users to read hidden files via the path name.
lists.apple.com/archives/security-announce/2016/Mar/msg00003.html
lists.opensuse.org/opensuse-updates/2015-08/msg00022.html
rhn.redhat.com/errata/RHSA-2015-1742.html
subversion.apache.org/security/CVE-2015-3184-advisory.txt
www.debian.org/security/2015/dsa-3331
www.securityfocus.com/bid/76274
www.securitytracker.com/id/1033215
www.ubuntu.com/usn/USN-2721-1
security.gentoo.org/glsa/201610-05
support.apple.com/HT206172