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Update golang.org/x/crypto (#19097)

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* Update golang.org/x/crypto

- Update dependency to include fix for CVE.
- See https://groups.google.com/g/golang-announce/c/-cp44ypCT5s/m/wmegxkLiAQAJ?utm_medium=email&utm_source=footer

* Fix deprecation notice

* Remove workaround

- Introduced in https://github.com/go-gitea/gitea/pull/17281
- Fixed in x/crypto:
- 5d542ad81a
- & 3147a52a75

* Update Kex Algorithms

- Use standardized name for curve22519-sha256. 9b076918e3
- Prefer SHA256 version over SHA1 version. e4b3678e5f
tokarchuk/v1.17
Gusted 3 years ago committed by GitHub
parent c88f2e2acc
commit 6ab4a96855
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 6 additions and 62 deletions
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  1. 2
      custom/conf/app.example.ini
  2. 2
      docs/content/doc/advanced/config-cheat-sheet.en-us.md
  3. 2
      go.mod
  4. 4
      go.sum
  5. 2
      modules/setting/setting.go
  6. 56
      modules/ssh/ssh.go

2
custom/conf/app.example.ini
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@ -117,7 +117,7 @@ RUN_MODE = ; prod
;;
;; For the built-in SSH server, choose the key exchange algorithms to support for SSH connections,
;; for system SSH this setting has no effect
;SSH_SERVER_KEY_EXCHANGES = curve25519-sha256@libssh.org, ecdh-sha2-nistp256, ecdh-sha2-nistp384, ecdh-sha2-nistp521, diffie-hellman-group14-sha1
;SSH_SERVER_KEY_EXCHANGES = curve25519-sha256, ecdh-sha2-nistp256, ecdh-sha2-nistp384, ecdh-sha2-nistp521, diffie-hellman-group14-sha256, diffie-hellman-group14-sha1
;;
;; For the built-in SSH server, choose the MACs to support for SSH connections,
;; for system SSH this setting has no effect

2
docs/content/doc/advanced/config-cheat-sheet.en-us.md
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@ -280,7 +280,7 @@ The following configuration set `Content-Type: application/vnd.android.package-a
- `SSH_AUTHORIZED_PRINCIPALS_BACKUP`: **false/true**: Enable SSH Authorized Principals Backup when rewriting all keys, default is true if `SSH_AUTHORIZED_PRINCIPALS_ALLOW` is not `off`.
- `SSH_AUTHORIZED_KEYS_COMMAND_TEMPLATE`: **{{.AppPath}} --config={{.CustomConf}} serv key-{{.Key.ID}}**: Set the template for the command to passed on authorized keys. Possible keys are: AppPath, AppWorkPath, CustomConf, CustomPath, Key - where Key is a `models/asymkey.PublicKey` and the others are strings which are shellquoted.
- `SSH_SERVER_CIPHERS`: **chacha20-poly1305@openssh.com, aes128-ctr, aes192-ctr, aes256-ctr, aes128-gcm@openssh.com, aes256-gcm@openssh.com**: For the built-in SSH server, choose the ciphers to support for SSH connections, for system SSH this setting has no effect.
- `SSH_SERVER_KEY_EXCHANGES`: **curve25519-sha256@libssh.org, ecdh-sha2-nistp256, ecdh-sha2-nistp384, ecdh-sha2-nistp521, diffie-hellman-group14-sha1**: For the built-in SSH server, choose the key exchange algorithms to support for SSH connections, for system SSH this setting has no effect.
- `SSH_SERVER_KEY_EXCHANGES`: **curve25519-sha256, ecdh-sha2-nistp256, ecdh-sha2-nistp384, ecdh-sha2-nistp521, diffie-hellman-group14-sha256, diffie-hellman-group14-sha1**: For the built-in SSH server, choose the key exchange algorithms to support for SSH connections, for system SSH this setting has no effect.
- `SSH_SERVER_MACS`: **hmac-sha2-256-etm@openssh.com, hmac-sha2-256, hmac-sha1**: For the built-in SSH server, choose the MACs to support for SSH connections, for system SSH this setting has no effect
- `SSH_SERVER_HOST_KEYS`: **ssh/gitea.rsa, ssh/gogs.rsa**: For the built-in SSH server, choose the keypairs to offer as the host key. The private key should be at `SSH_SERVER_HOST_KEY` and the public `SSH_SERVER_HOST_KEY.pub`. Relative paths are made absolute relative to the `APP_DATA_PATH`. If no key exists a 4096 bit RSA key will be created for you.
- `SSH_KEY_TEST_PATH`: **/tmp**: Directory to create temporary files in when testing public keys using ssh-keygen, default is the system temporary directory.

2
go.mod
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@ -122,7 +122,7 @@ require (
go.uber.org/atomic v1.9.0 // indirect
go.uber.org/multierr v1.8.0 // indirect
go.uber.org/zap v1.21.0 // indirect
golang.org/x/crypto v0.0.0-20220214200702-86341886e292
golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd
golang.org/x/net v0.0.0-20220225172249-27dd8689420f
golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b
golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9

4
go.sum
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@ -1683,8 +1683,8 @@ golang.org/x/crypto v0.0.0-20210817164053-32db794688a5/go.mod h1:GvvjBRRGRdwPK5y
golang.org/x/crypto v0.0.0-20211108221036-ceb1ce70b4fa/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/crypto v0.0.0-20220112180741-5e0467b6c7ce/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/crypto v0.0.0-20220214200702-86341886e292 h1:f+lwQ+GtmgoY+A2YaQxlSOnDjXcQ7ZRLWOHbC6HtRqE=
golang.org/x/crypto v0.0.0-20220214200702-86341886e292/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd h1:XcWmESyNjXJMLahc3mqVQJcgSTDxFxhETVlfk9uGc38=
golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=

2
modules/setting/setting.go
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@ -164,7 +164,7 @@ var (
Domain: "",
Port: 22,
ServerCiphers: []string{"chacha20-poly1305@openssh.com", "aes128-ctr", "aes192-ctr", "aes256-ctr", "aes128-gcm@openssh.com", "aes256-gcm@openssh.com"},
ServerKeyExchanges: []string{"curve25519-sha256@libssh.org", "ecdh-sha2-nistp256", "ecdh-sha2-nistp384", "ecdh-sha2-nistp521", "diffie-hellman-group14-sha1"},
ServerKeyExchanges: []string{"curve25519-sha256", "ecdh-sha2-nistp256", "ecdh-sha2-nistp384", "ecdh-sha2-nistp521", "diffie-hellman-group14-sha256", "diffie-hellman-group14-sha1"},
ServerMACs: []string{"hmac-sha2-256-etm@openssh.com", "hmac-sha2-256", "hmac-sha1"},
KeygenPath: "ssh-keygen",
MinimumKeySizeCheck: true,

56
modules/ssh/ssh.go
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@ -317,65 +317,9 @@ func Listen(host string, port int, ciphers, keyExchanges, macs []string) {
}
}
// Workaround slightly broken behaviour in x/crypto/ssh/handshake.go:458-463
//
// Fundamentally the issue here is that HostKeyAlgos make the incorrect assumption
// that the PublicKey().Type() matches the signature algorithm.
//
// Therefore we need to add duplicates for the RSA with different signing algorithms.
signers := make([]ssh.Signer, 0, len(srv.HostSigners))
for _, signer := range srv.HostSigners {
if signer.PublicKey().Type() == "ssh-rsa" {
signers = append(signers,
&wrapSigner{
Signer: signer,
algorithm: gossh.SigAlgoRSASHA2512,
},
&wrapSigner{
Signer: signer,
algorithm: gossh.SigAlgoRSASHA2256,
},
)
}
signers = append(signers, signer)
}
srv.HostSigners = signers
go listen(&srv)
}
// wrapSigner wraps a signer and overrides its public key type with the provided algorithm
type wrapSigner struct {
ssh.Signer
algorithm string
}
// PublicKey returns an associated PublicKey instance.
func (s *wrapSigner) PublicKey() gossh.PublicKey {
return &wrapPublicKey{
PublicKey: s.Signer.PublicKey(),
algorithm: s.algorithm,
}
}
// Sign returns raw signature for the given data. This method
// will apply the hash specified for the keytype to the data using
// the algorithm assigned for this key
func (s *wrapSigner) Sign(rand io.Reader, data []byte) (*gossh.Signature, error) {
return s.Signer.(gossh.AlgorithmSigner).SignWithAlgorithm(rand, data, s.algorithm)
}
// wrapPublicKey wraps a PublicKey and overrides its type
type wrapPublicKey struct {
gossh.PublicKey
algorithm string
}
// Type returns the algorithm
func (k *wrapPublicKey) Type() string {
return k.algorithm
}
// GenKeyPair make a pair of public and private keys for SSH access.
// Public key is encoded in the format for inclusion in an OpenSSH authorized_keys file.
// Private Key generated is PEM encoded

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