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TUN-8052: Update go to 1.21.5
Also update golang.org/x/net and google.golang.org/grpc to fix vulnerabilities, although cloudflared is using them in a way that is not exposed to those risks
This commit is contained in:
51
vendor/golang.org/x/crypto/ssh/handshake.go
generated
vendored
51
vendor/golang.org/x/crypto/ssh/handshake.go
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vendored
@@ -11,6 +11,7 @@ import (
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"io"
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"log"
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"net"
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"strings"
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"sync"
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)
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@@ -50,6 +51,10 @@ type handshakeTransport struct {
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// connection.
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hostKeys []Signer
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// publicKeyAuthAlgorithms is non-empty if we are the server. In that case,
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// it contains the supported client public key authentication algorithms.
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publicKeyAuthAlgorithms []string
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// hostKeyAlgorithms is non-empty if we are the client. In that case,
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// we accept these key types from the server as host key.
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hostKeyAlgorithms []string
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@@ -141,6 +146,7 @@ func newClientTransport(conn keyingTransport, clientVersion, serverVersion []byt
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func newServerTransport(conn keyingTransport, clientVersion, serverVersion []byte, config *ServerConfig) *handshakeTransport {
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t := newHandshakeTransport(conn, &config.Config, clientVersion, serverVersion)
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t.hostKeys = config.hostKeys
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t.publicKeyAuthAlgorithms = config.PublicKeyAuthAlgorithms
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go t.readLoop()
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go t.kexLoop()
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return t
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@@ -461,19 +467,24 @@ func (t *handshakeTransport) sendKexInit() error {
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isServer := len(t.hostKeys) > 0
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if isServer {
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for _, k := range t.hostKeys {
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// If k is an AlgorithmSigner, presume it supports all signature algorithms
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// associated with the key format. (Ideally AlgorithmSigner would have a
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// method to advertise supported algorithms, but it doesn't. This means that
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// adding support for a new algorithm is a breaking change, as we will
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// immediately negotiate it even if existing implementations don't support
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// it. If that ever happens, we'll have to figure something out.)
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// If k is not an AlgorithmSigner, we can only assume it only supports the
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// algorithms that matches the key format. (This means that Sign can't pick
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// a different default.)
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// If k is a MultiAlgorithmSigner, we restrict the signature
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// algorithms. If k is a AlgorithmSigner, presume it supports all
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// signature algorithms associated with the key format. If k is not
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// an AlgorithmSigner, we can only assume it only supports the
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// algorithms that matches the key format. (This means that Sign
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// can't pick a different default).
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keyFormat := k.PublicKey().Type()
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if _, ok := k.(AlgorithmSigner); ok {
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switch s := k.(type) {
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case MultiAlgorithmSigner:
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for _, algo := range algorithmsForKeyFormat(keyFormat) {
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if contains(s.Algorithms(), underlyingAlgo(algo)) {
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msg.ServerHostKeyAlgos = append(msg.ServerHostKeyAlgos, algo)
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}
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}
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case AlgorithmSigner:
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msg.ServerHostKeyAlgos = append(msg.ServerHostKeyAlgos, algorithmsForKeyFormat(keyFormat)...)
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} else {
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default:
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msg.ServerHostKeyAlgos = append(msg.ServerHostKeyAlgos, keyFormat)
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}
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}
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@@ -642,16 +653,21 @@ func (t *handshakeTransport) enterKeyExchange(otherInitPacket []byte) error {
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// On the server side, after the first SSH_MSG_NEWKEYS, send a SSH_MSG_EXT_INFO
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// message with the server-sig-algs extension if the client supports it. See
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// RFC 8308, Sections 2.4 and 3.1.
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// RFC 8308, Sections 2.4 and 3.1, and [PROTOCOL], Section 1.9.
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if !isClient && firstKeyExchange && contains(clientInit.KexAlgos, "ext-info-c") {
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supportedPubKeyAuthAlgosList := strings.Join(t.publicKeyAuthAlgorithms, ",")
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extInfo := &extInfoMsg{
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NumExtensions: 1,
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Payload: make([]byte, 0, 4+15+4+len(supportedPubKeyAuthAlgosList)),
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NumExtensions: 2,
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Payload: make([]byte, 0, 4+15+4+len(supportedPubKeyAuthAlgosList)+4+16+4+1),
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}
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extInfo.Payload = appendInt(extInfo.Payload, len("server-sig-algs"))
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extInfo.Payload = append(extInfo.Payload, "server-sig-algs"...)
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extInfo.Payload = appendInt(extInfo.Payload, len(supportedPubKeyAuthAlgosList))
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extInfo.Payload = append(extInfo.Payload, supportedPubKeyAuthAlgosList...)
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extInfo.Payload = appendInt(extInfo.Payload, len("ping@openssh.com"))
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extInfo.Payload = append(extInfo.Payload, "ping@openssh.com"...)
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extInfo.Payload = appendInt(extInfo.Payload, 1)
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extInfo.Payload = append(extInfo.Payload, "0"...)
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if err := t.conn.writePacket(Marshal(extInfo)); err != nil {
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return err
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}
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@@ -685,9 +701,16 @@ func (a algorithmSignerWrapper) SignWithAlgorithm(rand io.Reader, data []byte, a
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func pickHostKey(hostKeys []Signer, algo string) AlgorithmSigner {
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for _, k := range hostKeys {
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if s, ok := k.(MultiAlgorithmSigner); ok {
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if !contains(s.Algorithms(), underlyingAlgo(algo)) {
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continue
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}
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}
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if algo == k.PublicKey().Type() {
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return algorithmSignerWrapper{k}
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}
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k, ok := k.(AlgorithmSigner)
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if !ok {
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continue
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