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fix: gracefully handle packets that would crash gopacket (fixes #1184)

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evilsocket 2025-07-10 12:55:07 +02:00
commit fed98adffa
1 changed files with 8 additions and 0 deletions
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8
modules/zerogod/zerogod_discovery.go
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@ -201,6 +201,14 @@ func (mod *ZeroGod) logDNS(src net.IP, dns layers.DNS, isLocal bool) {
func (mod *ZeroGod) onPacket(pkt gopacket.Packet) {
mod.Debug("%++v", pkt)
// sadly the latest available version of gopacket has an unpatched bug :/
// https://github.com/bettercap/bettercap/issues/1184
defer func() {
if err := recover(); err != nil {
mod.Error("unexpected error while parsing network packet: %v\n\n%++v", err, pkt)
}
}()
netLayer := pkt.NetworkLayer()
if netLayer == nil {
mod.Warning("not network layer in packet %+v", pkt)