The expansion of ‘\h’ in the prompt string in bash 4.3 allows remote authenticated users to execute arbitrary code via shell metacharacters placed in ‘hostname’ of a machine.
rhn.redhat.com/errata/RHSA-2017-0725.html
www.openwall.com/lists/oss-security/2016/09/16/12
www.openwall.com/lists/oss-security/2016/09/16/8
www.openwall.com/lists/oss-security/2016/09/18/11
www.openwall.com/lists/oss-security/2016/09/19/7
www.openwall.com/lists/oss-security/2016/09/20/1
www.openwall.com/lists/oss-security/2016/09/27/9
www.openwall.com/lists/oss-security/2016/09/29/27
www.openwall.com/lists/oss-security/2016/10/07/6
www.openwall.com/lists/oss-security/2016/10/10/3
www.openwall.com/lists/oss-security/2016/10/10/4
www.securityfocus.com/bid/92999
access.redhat.com/errata/RHSA-2017:1931
bugzilla.redhat.com/show_bug.cgi?id=1377613
security.gentoo.org/glsa/201612-39