First Last Prev Next    This bug is not in your last search results.
Bug 1173994 - (CVE-2020-14323) VUL-0: CVE-2020-14323: samba: Denial of service in winbindd.
(CVE-2020-14323)
VUL-0: CVE-2020-14323: samba: Denial of service in winbindd.
Status: REOPENED
Classification: Novell Products
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents
unspecified
Other Other
: P3 - Medium : Normal
: ---
Assigned To: Novell Samba Team
Security Team bot
https://smash.suse.de/issue/263098/
CVSSv3.1:SUSE:CVE-2020-14323:5.0:(AV:...
:
Depends on:
Blocks:
  Show dependency tree / graph
 
Reported: 2020-07-10 11:34 UTC by Marcus Meissner
Modified: 2023-01-23 14:15 UTC (History)
7 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

Attachments
CVE-2020-14323.py (1.18 KB, text/x-python)
2020-07-10 11:35 UTC, Marcus Meissner 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Comment 1 Marcus Meissner 2020-07-10 11:35:45 UTC 
Created attachment 839579 [details]
CVE-2020-14323.py

QA REPRODUCER:

python3 CVE-2020-14323.py

should (NOT) crash the local winbindd
Comment 5 Marcus Meissner 2020-10-07 12:07:50 UTC 
CRD: 2020-10-29
Comment 7 Marcus Meissner 2020-10-29 09:39:58 UTC 
now poublic

https://www.samba.org/samba/security/CVE-2020-14323.html


CVE-2020-14323.html

===========================================================
== Subject:     Unprivileged user can crash winbind
== 
== GitHub Security Lab (GHSL) Vulnerability Report: 'GHSL-2020-134'
==
== CVE ID#:     CVE-2020-14323
==              
==
== Versions:    All versions of Samba since Samba 3.6.0
==
== Summary:     With a specially crafted winbind request
==              sent over the non-privileged winbind pipe
==              winbind can be made to dereference a NULL
==              pointer
===========================================================

===========
Description
===========

winbind in version 3.6 and later implements a request to
translate multiple Windows SIDs into names in one request. This
was done for performance reasons: Active Directory domain
controllers can do multiple SID to name translations in one RPC
call. It was an obvious extension to also offer this batch
operation on the winbind unix domain stream socket that is
available to local processes on the Samba server to reduce
network round-trips to the domain controller.

Due to improper input validation a hand-crafted packet can make
winbind perform a NULL pointer dereference and thus crash.

==================
Patch Availability
==================

Patches addressing both these issues have been posted to:

    https://www.samba.org/samba/security/

Additionally, Samba 4.11.15, 4.12.9 and 4.13.1 have been issued as
security releases to correct the defect. Samba administrators are
advised to upgrade to these releases or apply the patch as soon as
possible.

==================
CVSSv3 calculation
==================

CVSS 3.1: AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H (5.0)

=================================
Workaround and mitigating factors
=================================

Any user with local shell access to the machine running winbind can
issue the winbind socket request. The only workaround is to disable
shell access to exposed machines.

Typical file servers don't offer full local access, they are not
affected.

=======
Credits
=======

Originally reported by Bas Alberts of the GitHub Security Lab Team as
GHSL-2020-134.

Advisory written by Volker Lendecke of SerNet and the Samba Team.

Patches provided by Volker Lendecke of SerNet and the Samba Team.

==========================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
==========================================================
Comment 9 Swamp Workflow Management 2020-10-29 14:23:50 UTC 
SUSE-SU-2020:3081-1: An update that fixes three vulnerabilities is now available.

Category: security (important)
Bug References: 1173902,1173994,1177613
CVE References: CVE-2020-14318,CVE-2020-14323,CVE-2020-14383
JIRA References: 
Sources used:
SUSE Linux Enterprise Module for Python2 15-SP2 (src):    samba-4.11.14+git.202.344b137b75d-4.14.1
SUSE Linux Enterprise Module for Basesystem 15-SP2 (src):    samba-4.11.14+git.202.344b137b75d-4.14.1
SUSE Linux Enterprise High Availability 15-SP2 (src):    samba-4.11.14+git.202.344b137b75d-4.14.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 10 Swamp Workflow Management 2020-10-29 14:24:58 UTC 
SUSE-SU-2020:3082-1: An update that fixes three vulnerabilities is now available.

Category: security (important)
Bug References: 1173902,1173994,1177613
CVE References: CVE-2020-14318,CVE-2020-14323,CVE-2020-14383
JIRA References: 
Sources used:
SUSE Linux Enterprise Software Development Kit 12-SP5 (src):    samba-4.10.18+git.219.1d732314d96-3.20.1
SUSE Linux Enterprise Server 12-SP5 (src):    samba-4.10.18+git.219.1d732314d96-3.20.1
SUSE Linux Enterprise High Availability 12-SP5 (src):    samba-4.10.18+git.219.1d732314d96-3.20.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 11 Swamp Workflow Management 2020-10-29 14:26:08 UTC 
SUSE-SU-2020:3083-1: An update that fixes two vulnerabilities is now available.

Category: security (important)
Bug References: 1173902,1173994
CVE References: CVE-2020-14318,CVE-2020-14323
JIRA References: 
Sources used:
SUSE OpenStack Cloud 7 (src):    samba-4.4.2-38.39.1
SUSE Linux Enterprise Server for SAP 12-SP2 (src):    samba-4.4.2-38.39.1
SUSE Linux Enterprise Server 12-SP2-LTSS (src):    samba-4.4.2-38.39.1
SUSE Linux Enterprise Server 12-SP2-BCL (src):    samba-4.4.2-38.39.1
SUSE Linux Enterprise High Availability 12-SP2 (src):    samba-4.4.2-38.39.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 12 Swamp Workflow Management 2020-10-29 17:15:12 UTC 
SUSE-SU-2020:3087-1: An update that fixes three vulnerabilities is now available.

Category: security (important)
Bug References: 1173902,1173994,1177613
CVE References: CVE-2020-14318,CVE-2020-14323,CVE-2020-14383
JIRA References: 
Sources used:
SUSE Linux Enterprise Server for SAP 15 (src):    samba-4.7.11+git.280.25dfd9a947d-4.51.1
SUSE Linux Enterprise Server 15-LTSS (src):    samba-4.7.11+git.280.25dfd9a947d-4.51.1
SUSE Linux Enterprise High Performance Computing 15-LTSS (src):    samba-4.7.11+git.280.25dfd9a947d-4.51.1
SUSE Linux Enterprise High Performance Computing 15-ESPOS (src):    samba-4.7.11+git.280.25dfd9a947d-4.51.1
SUSE Linux Enterprise High Availability 15 (src):    samba-4.7.11+git.280.25dfd9a947d-4.51.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 13 Swamp Workflow Management 2020-10-29 20:20:04 UTC 
SUSE-SU-2020:3093-1: An update that fixes three vulnerabilities is now available.

Category: security (important)
Bug References: 1173902,1173994,1177613
CVE References: CVE-2020-14318,CVE-2020-14323,CVE-2020-14383
JIRA References: 
Sources used:
SUSE OpenStack Cloud Crowbar 9 (src):    samba-4.6.16+git.248.c833312e640-3.58.1
SUSE OpenStack Cloud Crowbar 8 (src):    samba-4.6.16+git.248.c833312e640-3.58.1
SUSE OpenStack Cloud 9 (src):    samba-4.6.16+git.248.c833312e640-3.58.1
SUSE OpenStack Cloud 8 (src):    samba-4.6.16+git.248.c833312e640-3.58.1
SUSE Linux Enterprise Server for SAP 12-SP4 (src):    samba-4.6.16+git.248.c833312e640-3.58.1
SUSE Linux Enterprise Server for SAP 12-SP3 (src):    samba-4.6.16+git.248.c833312e640-3.58.1
SUSE Linux Enterprise Server 12-SP4-LTSS (src):    samba-4.6.16+git.248.c833312e640-3.58.1
SUSE Linux Enterprise Server 12-SP3-LTSS (src):    samba-4.6.16+git.248.c833312e640-3.58.1
SUSE Linux Enterprise Server 12-SP3-BCL (src):    samba-4.6.16+git.248.c833312e640-3.58.1
SUSE Linux Enterprise High Availability 12-SP4 (src):    samba-4.6.16+git.248.c833312e640-3.58.1
SUSE Linux Enterprise High Availability 12-SP3 (src):    samba-4.6.16+git.248.c833312e640-3.58.1
SUSE Enterprise Storage 5 (src):    samba-4.6.16+git.248.c833312e640-3.58.1
HPE Helion Openstack 8 (src):    samba-4.6.16+git.248.c833312e640-3.58.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 14 Swamp Workflow Management 2020-10-29 20:22:25 UTC 
SUSE-SU-2020:3092-1: An update that fixes three vulnerabilities is now available.

Category: security (important)
Bug References: 1173902,1173994,1177613
CVE References: CVE-2020-14318,CVE-2020-14323,CVE-2020-14383
JIRA References: 
Sources used:
SUSE Linux Enterprise Module for Python2 15-SP1 (src):    samba-4.9.5+git.383.7b7f8f14df8-3.47.1
SUSE Linux Enterprise Module for Basesystem 15-SP1 (src):    samba-4.9.5+git.383.7b7f8f14df8-3.47.1
SUSE Linux Enterprise High Availability 15-SP1 (src):    samba-4.9.5+git.383.7b7f8f14df8-3.47.1
SUSE Enterprise Storage 6 (src):    samba-4.9.5+git.383.7b7f8f14df8-3.47.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 16 Swamp Workflow Management 2020-10-30 17:17:40 UTC 
SUSE-SU-2020:14525-1: An update that fixes two vulnerabilities is now available.

Category: security (important)
Bug References: 1173902,1173994
CVE References: CVE-2020-14318,CVE-2020-14323
JIRA References: 
Sources used:
SUSE Linux Enterprise Server 11-SP4-LTSS (src):    samba-3.6.3-94.31.1, samba-doc-3.6.3-94.31.1
SUSE Linux Enterprise Point of Sale 11-SP3 (src):    samba-3.6.3-94.31.1, samba-doc-3.6.3-94.31.1
SUSE Linux Enterprise Debuginfo 11-SP4 (src):    samba-3.6.3-94.31.1
SUSE Linux Enterprise Debuginfo 11-SP3 (src):    samba-3.6.3-94.31.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 17 Swamp Workflow Management 2020-11-02 05:19:51 UTC 
openSUSE-SU-2020:1811-1: An update that fixes three vulnerabilities is now available.

Category: security (important)
Bug References: 1173902,1173994,1177613
CVE References: CVE-2020-14318,CVE-2020-14323,CVE-2020-14383
JIRA References: 
Sources used:
openSUSE Leap 15.1 (src):    samba-4.9.5+git.383.7b7f8f14df8-lp151.2.36.1
Comment 18 Swamp Workflow Management 2020-11-02 11:17:34 UTC 
openSUSE-SU-2020:1819-1: An update that fixes three vulnerabilities is now available.

Category: security (important)
Bug References: 1173902,1173994,1177613
CVE References: CVE-2020-14318,CVE-2020-14323,CVE-2020-14383
JIRA References: 
Sources used:
openSUSE Leap 15.2 (src):    samba-4.11.14+git.202.344b137b75d-lp152.3.16.1
Comment 20 Swamp Workflow Management 2021-01-21 14:15:43 UTC 
SUSE-SU-2021:0185-1: An update that solves three vulnerabilities and has two fixes is now available.

Category: security (moderate)
Bug References: 1173902,1173994,1177355,1177613,1178469
CVE References: CVE-2020-14318,CVE-2020-14323,CVE-2020-14383
JIRA References: 
Sources used:
SUSE Enterprise Storage 7 (src):    samba-4.13.3+git.181.fc4672a5b81-3.3.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 21 Marcus Meissner 2021-08-09 15:20:45 UTC 
released
Comment 29 Swamp Workflow Management 2023-01-23 14:15:41 UTC 
SUSE-SU-2023:0122-1: An update that fixes 5 vulnerabilities is now available.

Category: security (important)
Bug References: 1173994,1201496,1205385,1206504,1206546
CVE References: CVE-2020-14323,CVE-2021-20251,CVE-2022-32742,CVE-2022-37966,CVE-2022-38023
JIRA References: 
Sources used:
SUSE Linux Enterprise Server 12-SP2-BCL (src):    samba-4.4.2-38.55.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
First Last Prev Next    This bug is not in your last search results.