STATUS_INVALID_PARAMETER while creating lsarpc transport

[abhisheksardana]

Hello,

We are creating lsarpc transport to fetch the security descriptor but the request is failing with STATUS_INVALID_PARAMETER if encrypt data flag it set to true and buffer size is 1 MB. However same is working fine if either buffer size is 64 KB or encrypt data flag it set to false.

This is how we are creating SMB client and transport.

SMBClient client  = new SMBClient(SmbConfig.builder()
                        .withTimeout(context.getSettings().getSessionTimeoutInSeconds(),
                                     TimeUnit.SECONDS)
                        .withDfsEnabled(true)
                        .withEncryptData(true)
                        .withBufferSize(1024 * 1024)
                        .withDialects(supportedSMBDialects)
                        .build());

RPCTransport transport = SMBTransportFactories.LSASVC.getTransport(session);

Working code:

SMBClient client  = new SMBClient(SmbConfig.builder()
                        .withTimeout(context.getSettings().getSessionTimeoutInSeconds(),
                                     TimeUnit.SECONDS)
                        .withDfsEnabled(true)
                        .withEncryptData(true)
                        .withBufferSize(64* 1024)
                        .withDialects(supportedSMBDialects)
                        .build());

RPCTransport transport = SMBTransportFactories.LSASVC.getTransport(session);

We are using 0.12.0 version of smbj-rpc and 0.11.3 version of smbj
OS: Windows server 2019