CVE-2023-4680

Vault's Transit Secrets Engine Allowed Nonce Specified without Convergent Encryption

Severity Score

6.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

HashiCorp Vault and Vault Enterprise transit secrets engine allowed authorized users to specify arbitrary nonces, even with convergent encryption disabled. The encrypt endpoint, in combination with an offline attack, could be used to decrypt arbitrary ciphertext and potentially derive the authentication subkey when using transit secrets engine without convergent encryption. Introduced in 1.6.0 and fixed in 1.14.3, 1.13.7, and 1.12.11.

El motor de secretos de tránsito de HashiCorp Vault y Vault Enterprise permitió a los usuarios autorizados especificar nonces arbitrarios, incluso con el cifrado convergente deshabilitado. El endpoint de cifrado, en combinación con un ataque fuera de línea, podría usarse para descifrar texto cifrado arbitrario y potencialmente derivar la subclave de autenticación cuando se utiliza el motor de secretos de tránsito sin cifrado convergente. Introducido en 1.6.0 y corregido en 1.14.3, 1.13.7 y 1.12.11.

*Credits: N/A

CVSS Scores

NISTv3.1 6.8

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2023-08-31 CVE Reserved
2023-09-14 CVE Published
2024-09-20 EPSS Updated
2024-09-26 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-323: Reusing a Nonce, Key Pair in Encryption

CAPEC

CAPEC-220: Client-Server Protocol Manipulation

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://discuss.hashicorp.com/t/hcsec-2023-28-vault-s-transit-secrets-engine-allowed-nonce-specified-without-convergent-encryption/58249	2023-09-20

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"				>= 1.6.0 < 1.12.11 Search vendor "Hashicorp" for product "Vault" and version " >= 1.6.0 < 1.12.11"		-		Affected
Hashicorp Search vendor "Hashicorp"		Vault Search vendor "Hashicorp" for product "Vault"				>= 1.6.0 < 1.12.11 Search vendor "Hashicorp" for product "Vault" and version " >= 1.6.0 < 1.12.11"		enterprise		Affected
Hashicorp Search vendor "Hashicorp"		Vault Search vendor "Hashicorp" for product "Vault"				>= 1.13.0 < 1.13.7 Search vendor "Hashicorp" for product "Vault" and version " >= 1.13.0 < 1.13.7"		-		Affected
Hashicorp Search vendor "Hashicorp"		Vault Search vendor "Hashicorp" for product "Vault"				>= 1.13.0 < 1.13.7 Search vendor "Hashicorp" for product "Vault" and version " >= 1.13.0 < 1.13.7"		enterprise		Affected
Hashicorp Search vendor "Hashicorp"		Vault Search vendor "Hashicorp" for product "Vault"				>= 1.14.0 < 1.14.3 Search vendor "Hashicorp" for product "Vault" and version " >= 1.14.0 < 1.14.3"		-		Affected
Hashicorp Search vendor "Hashicorp"		Vault Search vendor "Hashicorp" for product "Vault"				>= 1.14.0 < 1.14.3 Search vendor "Hashicorp" for product "Vault" and version " >= 1.14.0 < 1.14.3"		enterprise		Affected