net usersidlist on a newly-installed samba server crashes with SIGSEGV

[C de-Avillez]

Binary package hint: samba

ISO testing, testing i386 server image -- Samba test. When I run 'net usersidlist' I get this output:

CHECKBOX\nobody
 S-1-5-21-2266484315-1315366848-732043401-501
 S-1-1-0
 S-1-5-2
 S-1-5-11

 (NULL SID)
Segmentation fault (core dumped)

Will add in the apport-collected data in a few

[C de-Avillez (hggdh2)]

Sigh. It seems I will have to reboot to get the report here :-(

[James Page (james-page)]

This should have been picked up by the automated ISO testing; I've reviewed the test script and this test is missing (all others are present).

[James Page (james-page)]

Confirmed as a bug on against i386 server image using a VM

[James Page (james-page)]

Architecture: i386
DistroRelease: Ubuntu 10.10
InstallationMedia: Ubuntu-Server 10.10 "Maverick Meerkat" - Release Candidate i386 (20101005)
NmbdLog:

Package: samba 2:3.5.4~dfsg-1ubuntu8
PackageArchitecture: i386
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic-pae 2.6.35.4
SambaServerRegression: Yes
SmbConfInclude: Yes
SmbLog:

Tags: maverick
Uname: Linux 2.6.35-22-generic-pae i686
UserGroups:

WindowsFailedConnect: Yes

[James Page (james-page)]

apport information

[James Page (james-page)]

apport information

[James Page (james-page)]

apport information

[Thierry Carrez (ttx)]

I don't reproduce it on amd64.

[Chuck Short (zulcss)]

I was able to reproduce this on i386.

chuck

[James Page (james-page)]

I don't get a segmentation fault on amd64; however the SID list returned only includes \nobody and not the one user account defined on the system (which is what is documented in the test case).

jamespage@maverick-amd64-smb:~$ net usersidlist
MAVERICK-AMD64-SMB\nobody
 S-1-5-21-2220227714-2457251725-4248854820-501
 S-1-1-0
 S-1-5-2
 S-1-5-11

wbinfo -u returns nobody + jamespage:

jamespage@maverick-amd64-smb:~$ wbinfo -u
MAVERICK-AMD64-SMB\nobody
MAVERICK-AMD64-SMB\jamespage

Is this some sort of fix to stop username enumeration? It almost looks intentional.

[Thierry Carrez (ttx)]

On amd64: the list only mentions UBUNTU\nobody.