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Merge pull request #166 from zmap/paul/mongodb-fix-index-err

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MongoDB - fix isMaster message length check.
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justinbastress 2018-09-14 16:33:33 -04:00 committed by GitHub
commit 412aefa977
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1 changed files with 2 additions and 2 deletions
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4
modules/mongodb/scanner.go
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@ -270,11 +270,11 @@ func getIsMaster(conn *Connection) (*IsMaster_t, error) {
return nil, err
}
if len(msg) < MSGHEADER_LEN + 4 {
if len(msg) < doc_offset + 4 {
err = fmt.Errorf("Server truncated message - no query reply (%d bytes: %s)", len(msg), hex.EncodeToString(msg))
return nil, err
}
respFlags := binary.LittleEndian.Uint32(msg[MSGHEADER_LEN:MSGHEADER_LEN + 5])
respFlags := binary.LittleEndian.Uint32(msg[MSGHEADER_LEN:MSGHEADER_LEN + 4])
if respFlags & QUERY_RESP_FAILED != 0 {
err = fmt.Errorf("isMaster query failed")
return nil, err