Samba up to 4.16.x dNSHostName default permission

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Samba up to 4.16.x. It has been classified as critical. This affects an unknown part. The manipulation of the argument dNSHostName leads to default permission. This vulnerability is uniquely identified as CVE-2022-32743. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Samba up to 4.16.x (File Transfer Software). It has been rated as critical. This issue affects an unknown code block. The manipulation of the argument dNSHostName with an unknown input leads to a default permission vulnerability. Using CWE to declare the problem leads to CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Samba does not validate the Validated-DNS-Host-Name right for the dNSHostName attribute which could permit unprivileged users to write it.

The weakness was disclosed 09/02/2022. The advisory is shared at bugzilla.samba.org. The identification of this vulnerability is CVE-2022-32743 since 06/09/2022. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1222 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 211187 (Fedora 38 : samba (2022-a457400fcd)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.17.0rc1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (211187) and EUVD (EUVD-2022-35809). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Default permission
CWE: CWE-276 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211187
Nessus Name: Fedora 38 : samba (2022-a457400fcd)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Samba 4.17.0rc1

Timelineinfo

06/09/2022 🔍
09/02/2022 +85 days 🔍
09/02/2022 +0 days 🔍
06/01/2026 +1368 days 🔍

Sourcesinfo

Product: samba.org

Advisory: FEDORA-2022-4555909843
Status: Confirmed

CVE: CVE-2022-32743 (🔍)
GCVE (CVE): GCVE-0-2022-32743
GCVE (VulDB): GCVE-100-207737
EUVD: 🔍

Entryinfo

Created: 09/02/2022 08:59
Updated: 06/01/2026 23:17
Changes: 09/02/2022 08:59 (40), 10/11/2022 09:51 (1), 10/11/2022 09:53 (11), 11/16/2024 18:12 (16), 08/22/2025 12:44 (1), 06/01/2026 23:17 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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