Samba up to 4.16.10/4.17.9/4.18.4 mdssvc RPC Service sl_unpack_loop infinite loop

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Samba up to 4.16.10/4.17.9/4.18.4 and classified as problematic. Affected by this vulnerability is the function sl_unpack_loop of the component mdssvc RPC Service. The manipulation results in infinite loop. This vulnerability is reported as CVE-2023-34966. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Samba up to 4.16.10/4.17.9/4.18.4 (File Transfer Software). Affected is the function sl_unpack_loop of the component mdssvc RPC Service. The manipulation with an unknown input leads to a infinite loop vulnerability. CWE is classifying the issue as CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. This is going to have an impact on availability.

The weakness was disclosed 07/20/2023. The advisory is shared for download at samba.org. This vulnerability is traded as CVE-2023-34966 since 06/07/2023. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 240197 (Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Samba vulnerabilities (USN-7582-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.16.11, 4.17.10 or 4.18.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (240197). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
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: 240197
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Samba vulnerabilities (USN-7582-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Samba 4.16.11/4.17.10/4.18.5

Timelineinfo

06/07/2023 🔍
07/20/2023 +43 days 🔍
07/20/2023 +0 days 🔍
06/20/2025 +701 days 🔍

Sourcesinfo

Product: samba.org

Advisory: FEDORA-2023-bcd91bfcd3
Status: Confirmed

CVE: CVE-2023-34966 (🔍)
GCVE (CVE): GCVE-0-2023-34966
GCVE (VulDB): GCVE-100-235092

Entryinfo

Created: 07/20/2023 17:11
Updated: 06/20/2025 11:13
Changes: 07/20/2023 17:11 (40), 08/15/2023 14:25 (2), 06/25/2024 21:12 (34), 06/20/2025 11:13 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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