CVE-2021-43566

Public Exploit

Description

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.

Category

2.5
CVSS
Severity: Low
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.18%
Vendor Advisory samba.org Vendor Advisory samba.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugzilla.samba.org/show_bug.cgi?id=13979 issue tracking exploit 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

Frequently Asked Questions

What is the severity of CVE-2021-43566?
CVE-2021-43566 has been scored as a low severity vulnerability.
How to fix CVE-2021-43566?
To fix CVE-2021-43566, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-43566 being actively exploited in the wild?
It is possible that CVE-2021-43566 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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