CVE-2021-43566

Name
CVE-2021-43566
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.
NVD Severity
low
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://www.samba.org/samba/history/
MISC https://bugzilla.samba.org/show_bug.cgi?id=13979
MISC https://www.samba.org/samba/security/CVE-2021-43566.html

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* samba >= None < 4.13.16

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
samba 3.13-main 4.13.17-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
samba 3.12-main 4.12.15-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable