Race Condition Affecting samba package, versions <2:4.16.0+dfsg-2


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.11% (47th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-SAMBA-2332021
  • published11 Jan 2022
  • disclosed11 Jan 2022

Introduced: 11 Jan 2022

CVE-2021-43566  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Debian:unstable samba to version 2:4.16.0+dfsg-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream samba package and not the samba package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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 Scores

version 3.1