DEBIAN-CVE-2021-43566

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2021-43566
Published: 11 Jan 2022, 16:15
Last modified:28 Apr 2026, 20:23

Vulnerability Summary

Overall Risk (default)
low
10/100
CVSS Score
2.5 LOW
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

11 Jan 2022, 16:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:23
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•LOW•Score: 2.5CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected Systems

  • debian•samba

    < 2:4.13.13+dfsg-1~deb11u4 | < 2:4.16.0+dfsg-2 | < 2:4.16.0+dfsg-2 | < 2:4.16.0+dfsg-2

References (1)