Executive Summary

Informations
Name CVE-2021-3671 First vendor Publication 2021-10-12
Vendor Cve Last vendor Modification 2022-11-26

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 6.5
Base Score 6.5 Environmental Score 6.5
impact SubScore 3.6 Temporal Score 6.5
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:N/I:N/A:P)
Cvss Base Score 4 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3671

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-476 NULL Pointer Dereference

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 371

Sources (Detail)

Source Url
DEBIAN https://www.debian.org/security/2022/dsa-5287
MISC https://bugzilla.redhat.com/show_bug.cgi?id=2013080,
https://bugzilla.samba.org/show_bug.cgi?id=14770,
https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2...
MLIST https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html

Alert History

If you want to see full details history, please login or register.
0
1
2
3
4
5
Date Informations
2022-11-27 05:27:29
  • Multiple Updates
2022-11-23 09:27:32
  • Multiple Updates
2022-10-11 13:08:32
  • Multiple Updates
2022-10-11 01:22:59
  • Multiple Updates
2021-10-19 17:22:55
  • Multiple Updates
2021-10-13 00:22:53
  • First insertion