The get_parent_resource function in repos.c in mod_dav_svn Apache HTTPD server module in Subversion 1.7.11 through 1.7.13 and 1.8.1 through 1.8.4, when built with assertions enabled and SVNAutoversioning is enabled, allows remote attackers to cause a denial of service (assertion failure and Apache process abort) via a non-canonical URL in a request, as demonstrated using a trailing /.

References

• https://nvd.nist.gov/vuln/detail/CVE-2013-4558
• https://bugzilla.redhat.com/show_bug.cgi?id=1033431
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00029.html
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00048.html
• http://osvdb.org/100363
• http://subversion.apache.org/security/CVE-2013-4558-advisory.txt
• apache/subversion@2c77c43
• apache/subversion@647e3f8