CVE-2022-32746

samba: AD users can induce a use-after-free in the server process with an LDAP add or modify request

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in the Samba AD LDAP server. The AD DC database audit logging module can access LDAP message values freed by a preceding database module, resulting in a use-after-free issue. This issue is only possible when modifying certain privileged attributes, such as userAccountControl.

Se ha encontrado un fallo en el servidor LDAP de Samba AD. El módulo de registro de auditoría de la base de datos AD DC puede acceder a los valores de los mensajes LDAP liberados por un módulo de base de datos anterior, resultando en un problema de uso de memoria previamente liberada. Este problema sólo es posible cuando son modificados determinados atributos privilegiados, como userAccountControl.

It was discovered that Samba did not handle MaxQueryDuration when being used in AD DC configurations, contrary to expectations. This issue only affected Ubuntu 20.04 LTS. Luke Howard discovered that Samba incorrectly handled certain restrictions associated with changing passwords. A remote attacker being requested to change passwords could possibly use this issue to escalate privileges.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-06-09 CVE Reserved
2022-08-01 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://www.samba.org/samba/security/CVE-2022-32746.html	2023-09-17

URL	Date	SRC
https://security.gentoo.org/glsa/202309-06	2023-09-17
https://access.redhat.com/security/cve/CVE-2022-32746	2022-11-15
https://bugzilla.redhat.com/show_bug.cgi?id=2108215	2022-11-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				>= 4.3.0 < 4.14.14 Search vendor "Samba" for product "Samba" and version " >= 4.3.0 < 4.14.14"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				>= 4.15.0 < 4.15.9 Search vendor "Samba" for product "Samba" and version " >= 4.15.0 < 4.15.9"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				>= 4.16.0 < 4.16.4 Search vendor "Samba" for product "Samba" and version " >= 4.16.0 < 4.16.4"		-		Affected