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Merge pull request #2179 from nukevoid/master

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Fix vulnerability with "h.from == 0"
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GUVWAF 2023-01-21 12:37:50 +01:00 committed by GitHub
commit c628c70db2
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1 changed files with 6 additions and 2 deletions
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8
src/mesh/RadioLibInterface.cpp
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@ -347,9 +347,13 @@ QueueStatus RadioLibInterface::getQueueStatus()
airTime->logAirtime(RX_ALL_LOG, xmitMsec);
} else {
const PacketHeader *h = (PacketHeader *)radiobuf;
rxGood++;
// altered packet with "from == 0" can do Remote Node Administration without permission
if (h->from == 0) {
LOG_WARN("ignoring received packet without sender\n");
return;
}
// Note: we deliver _all_ packets to our router (i.e. our interface is intentionally promiscuous).
// This allows the router and other apps on our node to sniff packets (usually routing) between other
// nodes.