http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-8242
assigning to ports-secteam
A commit references this bug: Author: feld Date: Fri Jan 8 18:23:26 UTC 2016 New revision: 405583 URL: https://svnweb.freebsd.org/changeset/ports/405583 Log: Document net/librsync collision vulnerability PR: 204237 Security: CVE-2014-8242 Changes: head/security/vuxml/vuln.xml
net/librsync is the pre 1.0.0 release and is not API compatible with 1.0.0+ because they moved from MD4 to BLAKE2. The fixed version is available in net/librsync1, but you need to port your software to it. We should probably DEPRECATE net/librsync, but first the dependent ports need to be analyzed. Notifying users via the vuxml entry should be good enough for now.