A flaw was found in the way moddavsvn handled certain requests when SVNAutoversioning (in "/etc/httpd/conf.d/subversion.conf", for example) was enabled. If an attacker with commit access to a repository sent a request containing a crafted URL, it would cause the httpd process serving the request to crash.
This issue affected Subversion versions 1.7.11 to 1.7.13, and 1.8.1 to 1.8.4. It has been corrected in versions 1.7.14 and 1.8.5.
This issue does not affect the versions of Subversion in Red Hat Enterprise Linux 5 and 6.
Acknowledgements:
Red Hat would like to thank the Apache Subversion project for reporting this issue. Upstream acknowledges Philip Martin as the original reporter.