VulnerabilityModified
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.
LOW 2.5EPSS 0.38%
Does this matter?
Lower severity and a low EPSS score (0.38%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 2.5 LOWCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.38% probability · 31th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- samba/samba
- Source
- cve@mitre.org
References
- https://bugzilla.samba.org/show_bug.cgi?id=13979Exploit, Issue Tracking, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20220110-0001/Third Party Advisory
- https://www.samba.org/samba/security/CVE-2021-43566.htmlPatch, Vendor Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=13979Exploit, Issue Tracking, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20220110-0001/Third Party Advisory
- https://www.samba.org/samba/security/CVE-2021-43566.htmlPatch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.