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TUN-2748: Insecure randomness vulnerability in github.com/miekg/dns

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This commit is contained in:
Areg Harutyunyan
2020-02-21 15:53:11 +00:00
parent 7b81cf8aa6
commit 6624a24040
116 changed files with 3885 additions and 4581 deletions
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21
vendor/github.com/miekg/dns/acceptfunc.go generated vendored
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@@ -6,22 +6,30 @@ type MsgAcceptFunc func(dh Header) MsgAcceptAction
// DefaultMsgAcceptFunc checks the request and will reject if:
//
// * isn't a request (don't respond in that case).
// * isn't a request (don't respond in that case)
//
// * opcode isn't OpcodeQuery or OpcodeNotify
//
// * Zero bit isn't zero
//
// * has more than 1 question in the question section
//
// * has more than 1 RR in the Answer section
//
// * has more than 0 RRs in the Authority section
//
// * has more than 2 RRs in the Additional section
//
var DefaultMsgAcceptFunc MsgAcceptFunc = defaultMsgAcceptFunc
// MsgAcceptAction represents the action to be taken.
type MsgAcceptAction int
const (
MsgAccept MsgAcceptAction = iota // Accept the message
MsgReject // Reject the message with a RcodeFormatError
MsgIgnore // Ignore the error and send nothing back.
MsgAccept MsgAcceptAction = iota // Accept the message
MsgReject // Reject the message with a RcodeFormatError
MsgIgnore // Ignore the error and send nothing back.
MsgRejectNotImplemented // Reject the message with a RcodeNotImplemented
)
func defaultMsgAcceptFunc(dh Header) MsgAcceptAction {
@@ -32,12 +40,9 @@ func defaultMsgAcceptFunc(dh Header) MsgAcceptAction {
// Don't allow dynamic updates, because then the sections can contain a whole bunch of RRs.
opcode := int(dh.Bits>>11) & 0xF
if opcode != OpcodeQuery && opcode != OpcodeNotify {
return MsgReject
return MsgRejectNotImplemented
}
if isZero := dh.Bits&_Z != 0; isZero {
return MsgReject
}
if dh.Qdcount != 1 {
return MsgReject
}