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TUN-8052: Update go to 1.21.5

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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:
Chung-Ting
2023-12-11 11:58:19 +00:00
parent b901d73d9b
commit 12dd91ada1
974 changed files with 28780 additions and 25799 deletions
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57
vendor/golang.org/x/crypto/ssh/server.go generated vendored
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@@ -64,6 +64,13 @@ type ServerConfig struct {
// Config contains configuration shared between client and server.
Config
// PublicKeyAuthAlgorithms specifies the supported client public key
// authentication algorithms. Note that this should not include certificate
// types since those use the underlying algorithm. This list is sent to the
// client if it supports the server-sig-algs extension. Order is irrelevant.
// If unspecified then a default set of algorithms is used.
PublicKeyAuthAlgorithms []string
hostKeys []Signer
// NoClientAuth is true if clients are allowed to connect without
@@ -201,6 +208,15 @@ func NewServerConn(c net.Conn, config *ServerConfig) (*ServerConn, <-chan NewCha
if fullConf.MaxAuthTries == 0 {
fullConf.MaxAuthTries = 6
}
if len(fullConf.PublicKeyAuthAlgorithms) == 0 {
fullConf.PublicKeyAuthAlgorithms = supportedPubKeyAuthAlgos
} else {
for _, algo := range fullConf.PublicKeyAuthAlgorithms {
if !contains(supportedPubKeyAuthAlgos, algo) {
return nil, nil, nil, fmt.Errorf("ssh: unsupported public key authentication algorithm %s", algo)
}
}
}
// Check if the config contains any unsupported key exchanges
for _, kex := range fullConf.KeyExchanges {
if _, ok := serverForbiddenKexAlgos[kex]; ok {
@@ -321,7 +337,7 @@ func checkSourceAddress(addr net.Addr, sourceAddrs string) error {
return fmt.Errorf("ssh: remote address %v is not allowed because of source-address restriction", addr)
}
func gssExchangeToken(gssapiConfig *GSSAPIWithMICConfig, firstToken []byte, s *connection,
func gssExchangeToken(gssapiConfig *GSSAPIWithMICConfig, token []byte, s *connection,
sessionID []byte, userAuthReq userAuthRequestMsg) (authErr error, perms *Permissions, err error) {
gssAPIServer := gssapiConfig.Server
defer gssAPIServer.DeleteSecContext()
@@ -331,7 +347,7 @@ func gssExchangeToken(gssapiConfig *GSSAPIWithMICConfig, firstToken []byte, s *c
outToken []byte
needContinue bool
)
outToken, srcName, needContinue, err = gssAPIServer.AcceptSecContext(firstToken)
outToken, srcName, needContinue, err = gssAPIServer.AcceptSecContext(token)
if err != nil {
return err, nil, nil
}
@@ -353,6 +369,7 @@ func gssExchangeToken(gssapiConfig *GSSAPIWithMICConfig, firstToken []byte, s *c
if err := Unmarshal(packet, userAuthGSSAPITokenReq); err != nil {
return nil, nil, err
}
token = userAuthGSSAPITokenReq.Token
}
packet, err := s.transport.readPacket()
if err != nil {
@@ -370,6 +387,25 @@ func gssExchangeToken(gssapiConfig *GSSAPIWithMICConfig, firstToken []byte, s *c
return authErr, perms, nil
}
// isAlgoCompatible checks if the signature format is compatible with the
// selected algorithm taking into account edge cases that occur with old
// clients.
func isAlgoCompatible(algo, sigFormat string) bool {
// Compatibility for old clients.
//
// For certificate authentication with OpenSSH 7.2-7.7 signature format can
// be rsa-sha2-256 or rsa-sha2-512 for the algorithm
// ssh-rsa-cert-v01@openssh.com.
//
// With gpg-agent < 2.2.6 the algorithm can be rsa-sha2-256 or rsa-sha2-512
// for signature format ssh-rsa.
if isRSA(algo) && isRSA(sigFormat) {
return true
}
// Standard case: the underlying algorithm must match the signature format.
return underlyingAlgo(algo) == sigFormat
}
// ServerAuthError represents server authentication errors and is
// sometimes returned by NewServerConn. It appends any authentication
// errors that may occur, and is returned if all of the authentication
@@ -505,7 +541,7 @@ userAuthLoop:
return nil, parseError(msgUserAuthRequest)
}
algo := string(algoBytes)
if !contains(supportedPubKeyAuthAlgos, underlyingAlgo(algo)) {
if !contains(config.PublicKeyAuthAlgorithms, underlyingAlgo(algo)) {
authErr = fmt.Errorf("ssh: algorithm %q not accepted", algo)
break
}
@@ -557,17 +593,26 @@ userAuthLoop:
if !ok || len(payload) > 0 {
return nil, parseError(msgUserAuthRequest)
}
// Ensure the declared public key algo is compatible with the
// decoded one. This check will ensure we don't accept e.g.
// ssh-rsa-cert-v01@openssh.com algorithm with ssh-rsa public
// key type. The algorithm and public key type must be
// consistent: both must be certificate algorithms, or neither.
if !contains(algorithmsForKeyFormat(pubKey.Type()), algo) {
authErr = fmt.Errorf("ssh: public key type %q not compatible with selected algorithm %q",
pubKey.Type(), algo)
break
}
// Ensure the public key algo and signature algo
// are supported. Compare the private key
// algorithm name that corresponds to algo with
// sig.Format. This is usually the same, but
// for certs, the names differ.
if !contains(supportedPubKeyAuthAlgos, sig.Format) {
if !contains(config.PublicKeyAuthAlgorithms, sig.Format) {
authErr = fmt.Errorf("ssh: algorithm %q not accepted", sig.Format)
break
}
if underlyingAlgo(algo) != sig.Format {
if !isAlgoCompatible(algo, sig.Format) {
authErr = fmt.Errorf("ssh: signature %q not compatible with selected algorithm %q", sig.Format, algo)
break
}