Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Network
0

CVE-2021-3671

Disclosure Date: October 12, 2021
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
6.5 Medium
Impact Score:
3.6
Exploitability Score:
2.8
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Vendors

  • debian,
  • netapp,
  • samba

Products

  • debian linux 10.0,
  • debian linux 11.0,
  • management services for element software -,
  • management services for netapp hci -,
  • ontap select deploy administration utility -,
  • samba
Technical Analysis