CVE-2023-22308 - CVE House
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Status published High CVE-2023-22308

An integer underflow vulnerability exists in the vpnserver OvsProcessData functionality...

Vulnerability Description

An integer underflow vulnerability exists in the vpnserver OvsProcessData functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Discovered by Lilith >_> of Cisco Talos.

References

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Critical 9

Affected Vendor

SoftEther VPN

View all reports →

Affected Software

SoftEther VPN
Vulnerable Versions:
5.01.9674, 5.02

Timeline

Official Publish: October 12th, 2023
Last Modified: August 2nd, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-191

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1574 Hijack Execution Flow
Privilege Escalation
T1059 Command and Scripting Interpreter
Execution
T1485 Data Destruction
Impact
T1499 Endpoint Denial of Service
Impact