CVE-2023-27516

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of SoftEther VPN 4.41-9782-beta and 5.01.9674. A specially crafted network packet can lead to unauthorized access. An attacker can send a network request to trigger this vulnerability.

Existe una vulnerabilidad de omisión de autenticación en la funcionalidad CiRpcAccepted() de SoftEther VPN 4.41-9782-beta y 5.01.9674. Un paquete de red especialmente manipulado puede provocar un acceso no autorizado. Un atacante puede enviar una solicitud de red para desencadenar esta vulnerabilidad.

*Credits: Discovered by Lilith >_> of Cisco Talos.

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

Poc

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-06-02 CVE Reserved
2023-10-12 CVE Published
2023-10-13 EPSS Updated
2024-08-02 CVE Updated
2024-08-02 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-453: Insecure Default Variable Initialization
CWE-1188: Initialization of a Resource with an Insecure Default

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1754	2024-08-02

URL	Date	SRC
https://www.softether.org/9-about/News/904-SEVPN202301	2023-10-18

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Softether Search vendor "Softether"		Vpn Search vendor "Softether" for product "Vpn"				4.41-9782 Search vendor "Softether" for product "Vpn" and version "4.41-9782"		beta		Affected
Softether Search vendor "Softether"		Vpn Search vendor "Softether" for product "Vpn"				5.01.9674 Search vendor "Softether" for product "Vpn" and version "5.01.9674"		-		Affected