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authorLibravatar Richard Hansen <rhansen@bbn.com>2014-04-21 19:53:09 -0400
committerLibravatar Junio C Hamano <gitster@pobox.com>2014-04-22 12:37:53 -0700
commit8976500cbbb13270398d3b3e07a17b8cc7bff43f (patch)
treeb7dc68f4d791a2b9210e8fe0b43abf80117d43b9 /git-gui/lib/index.tcl
parentGit 1.8.5.5 (diff)
downloadtgif-8976500cbbb13270398d3b3e07a17b8cc7bff43f.tar.xz
git-prompt.sh: don't put unsanitized branch names in $PS1
Both bash and zsh subject the value of PS1 to parameter expansion, command substitution, and arithmetic expansion. Rather than include the raw, unescaped branch name in PS1 when running in two- or three-argument mode, construct PS1 to reference a variable that holds the branch name. Because the shells do not recursively expand, this avoids arbitrary code execution by specially-crafted branch names such as '$(IFS=_;cmd=sudo_rm_-rf_/;$cmd)'. Signed-off-by: Richard Hansen <rhansen@bbn.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'git-gui/lib/index.tcl')
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