Bug 13906 - Samba Client sends large payload for "Session Setup Request" being sent to Samba Server with NTLM based authentication
Summary: Samba Client sends large payload for "Session Setup Request" being sent to Sa...
Status: NEW
Alias: None
Product: Samba 4.1 and newer
Classification: Unclassified
Component: libsmbclient (show other bugs)
Version: 4.5.14
Hardware: x64 Other
: P5 normal (vote)
Target Milestone: ---
Assignee: Samba QA Contact
QA Contact: Samba QA Contact
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-04-19 00:32 UTC by Arjun
Modified: 2019-05-02 07:03 UTC (History)
1 user (show)

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Description Arjun 2019-04-19 00:32:01 UTC 
Samba client sending larger payload with NTLM based authentication

Product : samba
Version : 4.5.16
Component : libsmbclient.so.0.2.3
Hardware : x64 
OS: CentOS Linux 7 (Core) 

Our smb client is based on ‘libsmbclient.so.0.2.3’ from the samba library - ‘samba-4.5.16-gcc63’. What we have observed is, sometime it sends large payload (anything from 16000 to 23400 bytes) for "Session Setup Request" being sent to Samba Server. And that Samba server crashes because of that large payload for "Session Setup Request". Here NTLM based authentication is used to Samba server.
Comment 1 Amit Kumar 2019-05-02 07:03:02 UTC 
(In reply to Arjun from comment #0)
Hello Arjun,
traceback showing where smbd crashed, smb.conf, logs at time of crash and coredump would be required to uncover the problem area.