Vulnerability · Published Jan 11, 2022 · Assigned by mitre
CVE-2021-43566
Low 2.5
In plain English
A low-severity security flaw in the samba package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)2.5Low
Exploit odds (30 days)0.4%top 65.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | samba | 2:4.16.0+dfsg-2 | DEBIAN-CVE-2021-43566 |
| Debian:13 | samba | 2:4.16.0+dfsg-2 | DEBIAN-CVE-2021-43566 |
| Debian:14 | samba | 2:4.16.0+dfsg-2 | DEBIAN-CVE-2021-43566 |
Affected products (as reported)
References
- https://bugzilla.samba.org/show_bug.cgi?id=13979 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220110-0001/ x_refsource_CONFIRM
- https://www.samba.org/samba/security/CVE-2021-43566.html x_refsource_MISC