Home/CVE/A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15, before 4.12.9 and befor
CVE

CVE-2020-14323

A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15, before 4.12.9 and befor

A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15, before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service.

MEDIUM · CVSS 5.5 EPSS 0.00421
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-170Improper Null Termination
CWE-476NULL Pointer Dereference
▤

Affected Products & Versions

6
samba>= 3.6.0 and < 4.11.15
samba>= 4.12.0 and < 4.12.9
samba>= 4.13.0 and < 4.13.1
opensuse leapall versions
fedoraproject fedoraall versions
debian linuxall versions
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Oct 2020 · 08:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

19
msrcCVE-2020-14323
suse-csafopenSUSE-SU-2024:11365-1
suse-csafSUSE-SU-2023:0122-1
usnUSN-4931-1
rhsaRHSA-2021:3723Moderate
🔗

References & Sources

10
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00008.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00012.htmlThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1891685Issue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00041.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00015.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JE2M4FE3N3EDXVG4UKSVFPL7SQUGFFDP/
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