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fix(crypto/ledger): Improve error message when deriving paths #22116

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Oct 3, 2024
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fix(crypto/ledger): Improve error message when deriving paths #22116

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3ef79c1
Better err msg when trying to derive path with index > 100
raynaudoe Oct 3, 2024
737dae7
Update changelog
raynaudoe Oct 3, 2024
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -52,6 +52,7 @@ Every module contains its own CHANGELOG.md. Please refer to the module you are i

### Improvements

* (crypto/ledger) [#22116](https://github.com/cosmos/cosmos-sdk/pull/22116) Improve error message when deriving paths using index >100
* (sims) [#21613](https://github.com/cosmos/cosmos-sdk/pull/21613) Add sims2 framework and factory methods for simpler message factories in modules
* (modules) [#21963](https://github.com/cosmos/cosmos-sdk/pull/21963) Duplicatable metrics are no more collected in modules. They were unecessary overhead.

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6 changes: 6 additions & 0 deletions crypto/ledger/ledger_secp256k1.go
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Expand Up @@ -341,6 +341,12 @@ func getPubKeyUnsafe(device SECP256K1, path hd.BIP44Params) (types.PubKey, error
func getPubKeyAddrSafe(device SECP256K1, path hd.BIP44Params, hrp string) (types.PubKey, string, error) {
publicKey, addr, err := device.GetAddressPubKeySECP256K1(path.DerivationPath(), hrp)
if err != nil {
// Check special case if user is trying to use an index > 100
if path.AddressIndex > 100 {
return nil, "", fmt.Errorf("%w: cannot derive paths where index > 100: %s "+
"This is a security measure to avoid very hard to find derivation paths introduced by a possible attacker. "+
"You can disable this by setting expert mode in your ledger device. Do this at your own risk", err, path)
}
return nil, "", fmt.Errorf("%w: address rejected for path %s", err, path)
}

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