SagerNet/sing-tun
1
0
Fork 0
mirror of https://github.com/SagerNet/sing-tun.git synced 2025-04-03 20:07:40 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

system: Check UDP invalid packet

Browse source
This commit is contained in:
世界 2023-11-11 23:41:09 +08:00
parent da350ecc72
commit ce9c864d89
No known key found for this signature in database
GPG key ID: CD109927C34A63C4
1 changed files with 6 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

6
stack_system.go
View file

@ -326,6 +326,9 @@ func (s *System) processIPv4UDP(packet clashtcpip.IPv4Packet, header clashtcpip.
if packet.FragmentOffset() != 0 {
return E.New("ipv4: udp: fragment dropped")
}
if !header.Valid() {
return E.New("ipv4: udp: invalid packet")
}
source := netip.AddrPortFrom(packet.SourceIP(), header.SourcePort())
destination := netip.AddrPortFrom(packet.DestinationIP(), header.DestinationPort())
if !destination.Addr().IsGlobalUnicast() {
@ -349,6 +352,9 @@ func (s *System) processIPv4UDP(packet clashtcpip.IPv4Packet, header clashtcpip.
}
func (s *System) processIPv6UDP(packet clashtcpip.IPv6Packet, header clashtcpip.UDPPacket) error {
if !header.Valid() {
return E.New("ipv6: udp: invalid packet")
}
source := netip.AddrPortFrom(packet.SourceIP(), header.SourcePort())
destination := netip.AddrPortFrom(packet.DestinationIP(), header.DestinationPort())
if !destination.Addr().IsGlobalUnicast() {