CVE-2023-27395 — CRITICAL (9.0)

Vulnerability Description

A heap-based buffer overflow vulnerability exists in the vpnserver WpcParsePacket() functionality of SoftEther VPN 4.41-9782-beta, 5.01.9674 and 5.02. A specially crafted network packet can lead to arbitrary code execution. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.

CVSS Score

9.0

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Softether	Vpn	4.41-9782

Related Weaknesses (CWE)

CWE-122 CWE-787

References

https://talosintelligence.com/vulnerability_reports/TALOS-2023-1735ExploitThird Party Advisory
https://www.softether.org/9-about/News/904-SEVPN202301PatchVendor Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1735ExploitThird Party Advisory
https://www.softether.org/9-about/News/904-SEVPN202301PatchVendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1735

FAQ

What is CVE-2023-27395?

CVE-2023-27395 is a vulnerability with a CVSS score of 9.0 (CRITICAL). A heap-based buffer overflow vulnerability exists in the vpnserver WpcParsePacket() functionality of SoftEther VPN 4.41-9782-beta, 5.01.9674 and 5.02. A specially crafted network packet can lead to ar...

How severe is CVE-2023-27395?

CVE-2023-27395 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2023-27395?

Check the references section above for vendor advisories and patch information. Affected products include: Softether Vpn.