applications/luci-wol: fix XSS

diff --git a/applications/luci-wol/luasrc/model/cbi/wol.lua b/applications/luci-wol/luasrc/model/cbi/wol.lua
index ac73919..30467f4 100644 (file)
--- a/applications/luci-wol/luasrc/model/cbi/wol.lua
+++ b/applications/luci-wol/luasrc/model/cbi/wol.lua
@@ -48,7 +48,7 @@ if has_ewk then
        end
 
        iface:value("", translate("Broadcast on all interfaces"))
-       
+
        for _, e in ipairs(sys.net.devices()) do
                if e ~= "lo" then iface:value(e) end
        end
@@ -86,7 +86,7 @@ end
 
 function host.write(self, s, val)
        local host = luci.http.formvalue("cbid.wol.1.mac")
-       if host and #host > 0 then
+       if host and #host > 0 and host:match("^[a-fA-F0-9:]+$") then
                local cmd
                local util = luci.http.formvalue("cbid.wol.1.binary") or (
                        has_ewk and "/usr/bin/etherwake" or "/usr/bin/wol"
@@ -127,4 +127,3 @@ end
 
 
 return m
-