===========================================================================
             AUSCERT External Security Bulletin Redistribution             
                                                                           
                               ESB-2024.2480                               
                           samba security update                           
                               23 April 2024                               
                                                                           
===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           samba                                                   
Publisher:         Debian                                                  
Operating System:  Debian GNU/Linux                                        
Resolution:        Patch/Upgrade                                           
CVE Names:         CVE-2022-3437 CVE-2022-2127 CVE-2022-32742              
                   CVE-2023-4091 CVE-2020-14383 CVE-2020-14323             
                   CVE-2020-14318                                          

Original Bulletin:
   https://lists.debian.org/debian-lts-announce/2024/04/msg00015.html

Comment: CVSS (Max):  6.5 CVE-2023-4091 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)
         CVSS Source: NIST                                                 
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N


- --------------------------BEGIN INCLUDED TEXT--------------------

-------------------------------------------------------------------------
Debian LTS Advisory DLA-3792-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/               Santiago Ruano Rincon
April 22, 2024                                https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package        : samba
Version        : 2:4.9.5+dfsg-5+deb10u5
CVE ID         : CVE-2020-14318 CVE-2020-14323 CVE-2020-14383 CVE-2022-2127
                 CVE-2022-3437 CVE-2022-32742 CVE-2023-4091

Several vulnerabilities were discovered in Samba, SMB/CIFS file,
print, and login server for Unix

CVE-2020-14318

    Missing handle permissions check in ChangeNotify

CVE-2020-14323

    Unprivileged user can crash winbind via invalid lookupsids DoS

CVE-2020-14383

    DNS server crash via invalid records resulting from uninitialized
    variables

CVE-2022-2127

    Out-of-bounds read in winbind AUTH_CRAP

CVE-2022-3437

    Heimdal des/des3 heap-based buffer overflow

CVE-2022-32742

    Server memory information leak via SMB1

CVE-2023-4091

    Client can truncate files even with read-only permissions

For Debian 10 buster, these problems have been fixed in version
2:4.9.5+dfsg-5+deb10u5.

We recommend that you upgrade your samba packages.

For the detailed security status of samba please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/samba

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

- --------------------------END INCLUDED TEXT----------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================