diff options
| author | Ian Gudger <igudger@google.com> | 2019-03-08 19:04:29 -0800 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2019-03-08 19:05:26 -0800 |
| commit | 86036f979b34855f0c945056f908961ccb804c1e (patch) | |
| tree | 60ba0b7f71399e2dddd6d283954a4f984501da73 /pkg | |
| parent | 56a61282953b46c8f8b707d5948a2d3958dced0c (diff) | |
Validate multicast addresses in multicast group operations.
PiperOrigin-RevId: 237559843
Change-Id: I93a9d83a08cd3d49d5fc7fcad5b0710d0aa04aaa
Diffstat (limited to 'pkg')
| -rw-r--r-- | pkg/tcpip/transport/udp/endpoint.go | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/pkg/tcpip/transport/udp/endpoint.go b/pkg/tcpip/transport/udp/endpoint.go index 3693abae5..cdde6a023 100644 --- a/pkg/tcpip/transport/udp/endpoint.go +++ b/pkg/tcpip/transport/udp/endpoint.go @@ -459,6 +459,10 @@ func (e *endpoint) SetSockOpt(opt interface{}) *tcpip.Error { e.multicastAddr = addr case tcpip.AddMembershipOption: + if !header.IsV4MulticastAddress(v.MulticastAddr) && !header.IsV6MulticastAddress(v.MulticastAddr) { + return tcpip.ErrInvalidOptionValue + } + nicID := v.NIC if v.InterfaceAddr == header.IPv4Any { if nicID == 0 { @@ -475,7 +479,6 @@ func (e *endpoint) SetSockOpt(opt interface{}) *tcpip.Error { return tcpip.ErrUnknownDevice } - // TODO: check that v.MulticastAddr is a multicast address. if err := e.stack.JoinGroup(e.netProto, nicID, v.MulticastAddr); err != nil { return err } @@ -486,6 +489,10 @@ func (e *endpoint) SetSockOpt(opt interface{}) *tcpip.Error { e.multicastMemberships = append(e.multicastMemberships, multicastMembership{nicID, v.MulticastAddr}) case tcpip.RemoveMembershipOption: + if !header.IsV4MulticastAddress(v.MulticastAddr) && !header.IsV6MulticastAddress(v.MulticastAddr) { + return tcpip.ErrInvalidOptionValue + } + nicID := v.NIC if v.InterfaceAddr == header.IPv4Any { if nicID == 0 { @@ -502,7 +509,6 @@ func (e *endpoint) SetSockOpt(opt interface{}) *tcpip.Error { return tcpip.ErrUnknownDevice } - // TODO: check that v.MulticastAddr is a multicast address. if err := e.stack.LeaveGroup(e.netProto, nicID, v.MulticastAddr); err != nil { return err } |