Subversion clients and servers, versions 1.6.0 through 1.6.3 and all versions prior to 1.5.7 suffer from several heap overflow vulnerabilities.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/80232/subversion-overflow.txt
Source: https://packetstormsecurity.com/files/80232/Subversion-Heap-Overflows.html