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zpay32: validate UTF-8 parsing field description

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MPins
2025-06-24 16:28:43 -03:00
committed by MPins
parent 37523b6cb7
commit 2b1a89fbaf
1 changed files with 11 additions and 0 deletions
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11
zpay32/decode.go
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@@ -7,6 +7,7 @@ import (
"fmt" "fmt"
"strings" "strings"
"time" "time"
"unicode/utf8"
"github.com/btcsuite/btcd/btcec/v2" "github.com/btcsuite/btcd/btcec/v2"
"github.com/btcsuite/btcd/btcec/v2/ecdsa" "github.com/btcsuite/btcd/btcec/v2/ecdsa"
@@ -18,6 +19,12 @@ import (
"github.com/lightningnetwork/lnd/lnwire" "github.com/lightningnetwork/lnd/lnwire"
) )
var (
// ErrInvalidUTF8Description is returned if the invoice description is
// not valid UTF-8.
ErrInvalidUTF8Description = errors.New("description is not valid UTF-8")
)
// DecodeOption is a type that can be used to supply functional options to the // DecodeOption is a type that can be used to supply functional options to the
// Decode function. // Decode function.
type DecodeOption func(*decodeOptions) type DecodeOption func(*decodeOptions)
@@ -446,6 +453,10 @@ func parseDescription(data []byte) (*string, error) {
return nil, err return nil, err
} }
if !utf8.Valid(base256Data) {
return nil, ErrInvalidUTF8Description
}
description := string(base256Data) description := string(base256Data)
return &description, nil return &description, nil