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Merge pull request from GHSA-3597-244c-wrpj

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Add some validation to passed arguments before running the values through `sed`
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Adam Warner 2021-04-14 18:16:46 +01:00 committed by GitHub
commit b388ac5bb5
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1 changed files with 29 additions and 3 deletions
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32
advanced/Scripts/webpage.sh
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@ -564,7 +564,13 @@ AddDHCPStaticAddress() {
RemoveDHCPStaticAddress() {
mac="${args[2]}"
sed -i "/dhcp-host=${mac}.*/d" "${dhcpstaticconfig}"
if [[ "$mac" =~ ^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$ ]]; then
sed -i "/dhcp-host=${mac}.*/d" "${dhcpstaticconfig}"
else
echo " ${CROSS} Invalid Mac Passed!"
exit 1
fi
}
SetAdminEmail() {
@ -708,7 +714,13 @@ RemoveCustomDNSAddress() {
ip="${args[2]}"
host="${args[3]}"
sed -i "/${ip} ${host}/d" "${dnscustomfile}"
if valid_ip "${ip}" || valid_ip6 "${ip}" ; then
sed -i "/${ip} ${host}/d" "${dnscustomfile}"
else
echo -e " ${CROSS} Invalid IP has been passed"
exit 1
fi
# Restart dnsmasq to update removed custom DNS entries
RestartDNS
@ -719,6 +731,7 @@ AddCustomCNAMERecord() {
domain="${args[2]}"
target="${args[3]}"
echo "cname=${domain},${target}" >> "${dnscustomcnamefile}"
# Restart dnsmasq to load new custom CNAME records
@ -730,7 +743,20 @@ RemoveCustomCNAMERecord() {
domain="${args[2]}"
target="${args[3]}"
sed -i "/cname=${domain},${target}/d" "${dnscustomcnamefile}"
validDomain="$(checkDomain "${domain}")"
if [[ -n "${validDomain}" ]]; then
validTarget="$(checkDomain "${target}")"
if [[ -n "${validDomain}" ]]; then
sed -i "/cname=${validDomain},${validTarget}/d" "${dnscustomcnamefile}"
else
echo " ${CROSS} Invalid Target Passed!"
exit 1
fi
else
echo " ${CROSS} Invalid Domain passed!"
exit 1
fi
# Restart dnsmasq to update removed custom CNAME records
RestartDNS