9.0
CRITICAL
CVE-2023-27395
SoftEther VPN Heap-Based Buffer Overflow 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.

INFO

Published Date :

Oct. 12, 2023, 4:15 p.m.

Last Modified :

Oct. 18, 2023, 5:58 p.m.

Remotely Exploitable :

Yes !

Impact Score :

6.0

Exploitability Score :

2.2
Affected Products

The following products are affected by CVE-2023-27395 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Softether vpn
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-27395.

URL Resource
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1735 Exploit Third Party Advisory
https://www.softether.org/9-about/News/904-SEVPN202301 Patch Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-27395 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-27395 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Oct. 18, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://talosintelligence.com/vulnerability_reports/TALOS-2023-1735 No Types Assigned https://talosintelligence.com/vulnerability_reports/TALOS-2023-1735 Exploit, Third Party Advisory
    Changed Reference Type https://www.softether.org/9-about/News/904-SEVPN202301 No Types Assigned https://www.softether.org/9-about/News/904-SEVPN202301 Patch, Vendor Advisory
    Added CWE NIST CWE-787
    Added CPE Configuration OR *cpe:2.3:a:softether:vpn:4.41-9782:beta:*:*:*:*:*:* *cpe:2.3:a:softether:vpn:5.01.9674:*:*:*:*:*:*:* *cpe:2.3:a:softether:vpn:5.02:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 12, 2023

    Action Type Old Value New Value
    Removed Reference https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1735 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 12, 2023

    Action Type Old Value New Value
    Added Reference https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1735 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-27395 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-27395 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.11 }} 0.01%

score

0.45177

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability