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Diffstat (limited to 'lib/relay/protocol/protocol.go')
| -rw-r--r-- | lib/relay/protocol/protocol.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/relay/protocol/protocol.go b/lib/relay/protocol/protocol.go index 97dee8d41e..0bc079ab65 100644 --- a/lib/relay/protocol/protocol.go +++ b/lib/relay/protocol/protocol.go @@ -4,6 +4,7 @@ package protocol import ( "errors" + "fmt" "io" ) @@ -86,6 +87,9 @@ func ReadMessage(r io.Reader) (interface{}, error) { if header.magic != magic { return nil, errors.New("magic mismatch") } + if header.messageLength < 0 || header.messageLength > 1024 { + return nil, fmt.Errorf("bad length (%d)", header.messageLength) + } buf = make([]byte, int(header.messageLength)) if _, err := io.ReadFull(r, buf); err != nil { |