Samba up to 4.11.14/4.12.8/4.13.0 Winbind service null pointer dereference

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Samba up to 4.11.14/4.12.8/4.13.0. This affects an unknown part of the component Winbind service. This manipulation causes null pointer dereference. The identification of this vulnerability is CVE-2020-14323. The attack can only be executed locally. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Samba up to 4.11.14/4.12.8/4.13.0 (File Transfer Software). Affected by this vulnerability is some unknown functionality of the component Winbind service. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability.

The weakness was shared 10/30/2020. The advisory is shared at samba.org. This vulnerability is known as CVE-2020-14323. The exploitation appears to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 236653 (Alibaba Cloud Linux 3 : 0077: samba (ALINUX3-SA-2021:0077)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.11.15, 4.12.9 or 4.13.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (236653). 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: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 236653
Nessus Name: Alibaba Cloud Linux 3 : 0077: samba (ALINUX3-SA-2021:0077)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Samba 4.11.15/4.12.9/4.13.1

Timelineinfo

06/17/2020 🔍
10/30/2020 +135 days 🔍
10/30/2020 +0 days 🔍
05/18/2025 +1661 days 🔍

Sourcesinfo

Product: samba.org

Advisory: samba.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-14323 (🔍)
GCVE (CVE): GCVE-0-2020-14323
GCVE (VulDB): GCVE-100-164089

Entryinfo

Created: 10/30/2020 13:45
Updated: 05/18/2025 20:31
Changes: 10/30/2020 13:45 (38), 11/30/2020 15:17 (3), 11/30/2020 15:20 (18), 05/18/2025 20:31 (17)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!