http://cvsweb.openwall.com/cgi/cvsweb.cgi/Owl/packages/groff/groff-1.20.1-owl-tmp.diff.diff?r1=1.1;r2=1.2;f=h
http://cvsweb.openwall.com/cgi/cvsweb.cgi/Owl/packages/groff/groff-1.20.1-owl-tmp.diff
ftp://ftp.gnu.org/gnu/groff/groff-1.20.1-1.21.diff.gz
https://support.apple.com/kb/HT205031
http://www.securityfocus.com/bid/36381
http://www.mandriva.com/security/advisories?name=MDVSA-2013:086
http://www.mandriva.com/security/advisories?name=MDVSA-2013:085
http://openwall.com/lists/oss-security/2009/08/14/5
http://openwall.com/lists/oss-security/2009/08/14/4
http://openwall.com/lists/oss-security/2009/08/10/2
http://openwall.com/lists/oss-security/2009/08/09/1
http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=538330
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