CVE-2023-31176

Insufficient entropy vulnerability could lead to authentication bypass

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

An Insufficient Entropy vulnerability in the Schweitzer Engineering Laboratories SEL-451 could allow an unauthenticated remote attacker to brute-force session tokens and bypass authentication. See product Instruction Manual Appendix A dated 20230830 for more details.

Una vulnerabilidad de entropía insuficiente en Schweitzer Engineering Laboratories SEL-451 podría permitir que un atacante remoto no autenticado utilice tokens de sesión de fuerza bruta y eluda la autenticación. Consulte el Apéndice A del Manual de instrucciones del producto con fecha 20230830 para obtener más detalles.

*Credits: Andrea Palanca and Gabriele Quagliarella of Nozomi Networks

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-04-24 CVE Reserved
2023-11-30 CVE Published
2024-10-16 CVE Updated
2025-01-01 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-331: Insufficient Entropy

CAPEC

CAPEC-115: Authentication Bypass

References (2)

URL	Tag	Source
https://www.nozominetworks.com/blog	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://selinc.com/support/security-notifications/external-reports	2023-12-06

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	>= r315-v0 < r315-v4 Search vendor "Selinc" for product "Sel-451 Firmware" and version " >= r315-v0 < r315-v4"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	>= r316-v0 < r316-v4 Search vendor "Selinc" for product "Sel-451 Firmware" and version " >= r316-v0 < r316-v4"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	>= r317-v0 < r317-v4 Search vendor "Selinc" for product "Sel-451 Firmware" and version " >= r317-v0 < r317-v4"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	>= r318-v0 < r318-v5 Search vendor "Selinc" for product "Sel-451 Firmware" and version " >= r318-v0 < r318-v5"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	>= r320-v0 < r320-v3 Search vendor "Selinc" for product "Sel-451 Firmware" and version " >= r320-v0 < r320-v3"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	>= r321-v0 < r321-v3 Search vendor "Selinc" for product "Sel-451 Firmware" and version " >= r321-v0 < r321-v3"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	>= r322-v0 < r322-v3 Search vendor "Selinc" for product "Sel-451 Firmware" and version " >= r322-v0 < r322-v3"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	>= r323-v0 < r323-v5 Search vendor "Selinc" for product "Sel-451 Firmware" and version " >= r323-v0 < r323-v5"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	>= r324-v0 < r324-v4 Search vendor "Selinc" for product "Sel-451 Firmware" and version " >= r324-v0 < r324-v4"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	>= r325-v0 < r325-v3 Search vendor "Selinc" for product "Sel-451 Firmware" and version " >= r325-v0 < r325-v3"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	r326-v0 Search vendor "Selinc" for product "Sel-451 Firmware" and version "r326-v0"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe
Selinc Search vendor "Selinc"	Sel-451 Firmware Search vendor "Selinc" for product "Sel-451 Firmware"	r327-v0 Search vendor "Selinc" for product "Sel-451 Firmware" and version "r327-v0"	-	Affected	in	Selinc Search vendor "Selinc"	Sel-451 Search vendor "Selinc" for product "Sel-451"	-	-	Safe