CVE-2021-43566

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-43566
All versions of Samba prior to 4.13.16 are vulnerable to a malicious client using an SMB1 or NFS race to allow a directory to be created in an area of the server file system not exported under the share definition. Note that SMB1 has to be enabled, or the share also available via NFS in order for this attack to succeed.

2.5 /10

CVSS v3 : LOW

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

1.2 /10

CVSS v2.0 : LOW

V2 Legend

Vector : AV:L/AC:H/Au:N/C:N/I:P/A:N

Exploitability : 1.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity HIGH

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References
Link Resource
https://bugzilla.samba.org/show_bug.cgi?id=13979 Exploit Issue Tracking Vendor Advisory
https://security.netapp.com/advisory/ntap-20220110-0001/ Third Party Advisory
https://www.samba.org/samba/security/CVE-2021-43566.html Patch Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
History

14 Oct 2022, 11:42

Type Values Removed Values Added
References (CONFIRM) https://security.netapp.com/advisory/ntap-20220110-0001/ - (CONFIRM) https://security.netapp.com/advisory/ntap-20220110-0001/ - Third Party Advisory

02 Jun 2022, 14:15

Type Values Removed Values Added
References
  • {'url': 'https://www.samba.org/samba/history/', 'name': 'https://www.samba.org/samba/history/', 'tags': ['Release Notes', 'Vendor Advisory'], 'refsource': 'MISC'}
  • (CONFIRM) https://security.netapp.com/advisory/ntap-20220110-0001/ -

20 Jan 2022, 18:17

Type Values Removed Values Added
References (MISC) https://bugzilla.samba.org/show_bug.cgi?id=13979 - (MISC) https://bugzilla.samba.org/show_bug.cgi?id=13979 - Exploit, Issue Tracking, Vendor Advisory
References (MISC) https://www.samba.org/samba/security/CVE-2021-43566.html - (MISC) https://www.samba.org/samba/security/CVE-2021-43566.html - Patch, Vendor Advisory
References (MISC) https://www.samba.org/samba/history/ - (MISC) https://www.samba.org/samba/history/ - Release Notes, Vendor Advisory
CPE cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 1.2
v3 : 2.5
CWE CWE-362

11 Jan 2022, 16:20

Type Values Removed Values Added
New CVE
Information

Published : 2022-01-11 16:15

Updated : 2024-02-04 22:08

NVD link : CVE-2021-43566

Mitre link : CVE-2021-43566

CVE.ORG link : CVE-2021-43566

JSON object : View

Products Affected

samba

  • samba
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')