Bug 14423 - Winbind crash with ticketer.py
Summary: Winbind crash with ticketer.py
Status: NEW
Alias: None
Product: Samba 4.1 and newer
Classification: Unclassified
Component: Winbind (show other bugs)
Version: unspecified
Hardware: x64 Linux
: P5 normal (vote)
Target Milestone: ---
Assignee: Samba QA Contact
QA Contact: Samba QA Contact
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-06-30 07:19 UTC by Simon Fonteneau
Modified: 2020-06-30 07:19 UTC (History)
0 users

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Description Simon Fonteneau 2020-06-30 07:19:50 UTC 
Hello

I have fun with the ticketer.py tools.

I am in a very special case.

I am trying to create a webservice that will distribute tickets.

It's an SSO-kerberos gateway, kerberos. (Pass-the-hash)

But I have a problem that causes samba to crash

I use : https://github.com/SecureAuthCorp/impacket

Exemple:

python3 ticketer.py -nthash 999999999999999999999999999999999
-domain-sid S-1-5-21-2462102061-3650107521-4026874488 -domain SF.LAN
-groups 513 -spn cifs/srvfichiers.sf.lan -user sfonteneau -extra-sid
S-1-5-21-2462102061-3650107521-4026874488-513 -user-id 1107 sfonteneau

smbclient -k -L //srvfichiers.sf.lan -U sfonteneau

The above example will work but will cause winbind to crash.

I am then obliged to restart the samba winbind.

Is this normal, is it a bug? is there a risk of ddos?