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sftp: include more ciphers with use_insecure_cipher

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This commit is contained in:
Carlos Ferreyra 2019-10-16 23:22:45 +02:00 committed by Nick Craig-Wood
parent 13e46c4b3f
commit 9cb549a227
1 changed files with 14 additions and 3 deletions
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15
backend/sftp/sftp.go
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@ -87,7 +87,18 @@ when the ssh-agent contains many keys.`,
Default: false,
}, {
Name: "use_insecure_cipher",
Help: "Enable the use of the aes128-cbc cipher and diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1 key exchange. Those algorithms are insecure and may allow plaintext data to be recovered by an attacker.",
Help: `Enable the use of insecure ciphers and key exchange methods.
This enables the use of the the following insecure ciphers and key exchange methods:
- aes128-cbc
- aes192-cbc
- aes256-cbc
- 3des-cbc
- diffie-hellman-group-exchange-sha256
- diffie-hellman-group-exchange-sha1
Those algorithms are insecure and may allow plaintext data to be recovered by an attacker.`,
Default: false,
Examples: []fs.OptionExample{
{
@ -363,7 +374,7 @@ func NewFs(name, root string, m configmap.Mapper) (fs.Fs, error) {
if opt.UseInsecureCipher {
sshConfig.Config.SetDefaults()
sshConfig.Config.Ciphers = append(sshConfig.Config.Ciphers, "aes128-cbc")
sshConfig.Config.Ciphers = append(sshConfig.Config.Ciphers, "aes128-cbc", "aes192-cbc", "aes256-cbc", "3des-cbc")
sshConfig.Config.KeyExchanges = append(sshConfig.Config.KeyExchanges, "diffie-hellman-group-exchange-sha1", "diffie-hellman-group-exchange-sha256")
}