BaseFortify

Publication date: 2025-11-21

Last updated on: 2025-12-10

Assigner: HashiCorp Inc.

Description

Vault’s Terraform Provider incorrectly set the default deny_null_bind parameter for the LDAP auth method to false by default, potentially resulting in an insecure configuration. If the underlying LDAP server allowed anonymous or unauthenticated binds, this could result in authentication bypass. This vulnerability, CVE-2025-13357, is fixed in Vault Terraform Provider v5.5.0.

CVSS Scores

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Meta Information

Published

2025-11-21

Last Modified

2025-12-10

Generated

2026-07-06

AI Q&A

2025-11-21

EPSS Evaluated

2026-07-05

NVD

CVE-2025-13357

Affected Vendors & Products

Vendor	Product	Version / Range
hashicorp	terraform_provider	From 4.2.0 (inc) to 5.5.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-1188	The product initializes or sets a resource with a default that is intended to be changed by the product's installer, administrator, or maintainer, but the default is not secure.

Attack-Flow Graph

Executive Summary

This vulnerability occurs because Vault's Terraform Provider incorrectly sets the default value of the deny_null_bind parameter for the LDAP authentication method to false. If the LDAP server allows anonymous or unauthenticated binds, this misconfiguration can lead to an authentication bypass, allowing unauthorized access.

Impact Analysis

The vulnerability can lead to authentication bypass if the LDAP server permits anonymous or unauthenticated binds. This means unauthorized users could gain access to systems or data that should be protected, potentially compromising confidentiality and integrity.

Mitigation Strategies

Upgrade the Vault Terraform Provider to version 5.5.0 or later, where the vulnerability is fixed. Additionally, verify and ensure that the deny_null_bind parameter for the LDAP auth method is set to true to prevent authentication bypass if the LDAP server allows anonymous or unauthenticated binds.

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