CVE-2021-3671

At a glance

Severity: Not available
EPSS: EPSS 2.12 % · percentile 82 (2026-10-27)
State: PUBLISHED
Published: 2021-10-12
Updated: 2024-08-03
Assigner: redhat
NVD status: Modified

Description

A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)
CVSS 2.0	MEDIUM 4.0	AV:N/AC:L/Au:S/C:N/I:N/A:P	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-476

European references

ENISA EUVD · EUVD-2021-26963
GCVE · GCVE-0-2021-3671

CERT-FR advisories

CERTFR-2024-AVI-0067 — Multiples vulnérabilités dans les produits NetApp · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* < 4.13.12
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* ≥ 4.14.0 < 4.14.8
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:a:netapp:management_services_for_element_software:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:management_services_for_netapp_hci:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*

Affected products

Product	Versions
Samba	affected Fixed in samba 4.13.12, samba 4.14.8

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD