CVE-2023-3462

Vault's LDAP Auth Method Allows for User Enumeration

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

NVD
RedHat

HashiCorp's Vault and Vault Enterprise are vulnerable to user enumeration when using the LDAP auth method. An attacker may submit requests of existent and non-existent LDAP users and observe the response from Vault to check if the account is valid on the LDAP server. This vulnerability is fixed in Vault 1.14.1 and 1.13.5.

A flaw was found in the HashiCorp Vault. The Vault and Vault Enterprise (“Vault”) LDAP auth method allows unauthenticated users to potentially enumerate valid accounts in the configured LDAP system by observing the response error when querying usernames.

*Credits: Jared Johnstone

CVSS Scores

NISTv3.1 5.3

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-06-29 CVE Reserved
2023-07-31 CVE Published
2024-09-01 EPSS Updated
2024-10-21 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-203: Observable Discrepancy

CAPEC

CAPEC-575: Account Footprinting

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://discuss.hashicorp.com/t/hcsec-2023-24-vaults-ldap-auth-method-allows-for-user-enumeration/56714	2023-08-04
https://access.redhat.com/security/cve/CVE-2023-3462	2024-10-16
https://bugzilla.redhat.com/show_bug.cgi?id=2228020	2024-10-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Hashicorp Search vendor "Hashicorp"		Vault Search vendor "Hashicorp" for product "Vault"				>= 1.13.0 < 1.13.5 Search vendor "Hashicorp" for product "Vault" and version " >= 1.13.0 < 1.13.5"		-		Affected
Hashicorp Search vendor "Hashicorp"		Vault Search vendor "Hashicorp" for product "Vault"				>= 1.13.0 < 1.13.5 Search vendor "Hashicorp" for product "Vault" and version " >= 1.13.0 < 1.13.5"		enterprise		Affected
Hashicorp Search vendor "Hashicorp"		Vault Search vendor "Hashicorp" for product "Vault"				1.14.0 Search vendor "Hashicorp" for product "Vault" and version "1.14.0"		-		Affected
Hashicorp Search vendor "Hashicorp"		Vault Search vendor "Hashicorp" for product "Vault"				1.14.0 Search vendor "Hashicorp" for product "Vault" and version "1.14.0"		enterprise		Affected