Multiple vulnerabilities has been discovered and corrected in
subversion:

Subversion HTTP servers with FSFS repositories are vulnerable to a
remotely triggerable excessive memory use with certain REPORT requests
(CVE-2015-0202).

Subversion mod_dav_svn and svnserve are vulnerable to a remotely
triggerable assertion DoS vulnerability for certain requests with
dynamically evaluated revision numbers (CVE-2015-0248).

Subversion HTTP servers allow spoofing svn:author property values
for new revisions (CVE-2015-0251).

The updated packages have been upgraded to the 1.7.20 and 1.8.13
versions where these security flaws has been fixed.