Vulnerability Monitor

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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.

Published

2022-01-11T16:15:07.813

Last Modified

2024-11-21T06:29:27.177

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 2.5 (LOW)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: HIGH
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

1.9

Impact Score

2.9

Weaknesses

Type: Primary
CWE-362

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	samba	samba	< 4.13.16	Yes

References

https://bugzilla.samba.org/show_bug.cgi?id=13979 Exploit, Issue Tracking, Vendor Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20220110-0001/ Third Party Advisory ([email protected])
https://www.samba.org/samba/security/CVE-2021-43566.html Patch, Vendor Advisory ([email protected])
https://bugzilla.samba.org/show_bug.cgi?id=13979 Exploit, Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20220110-0001/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.samba.org/samba/security/CVE-2021-43566.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)