9.8
CRITICAL
CVE-2023-46850
OpenVPN Use-After-Free Buffers Leak/Remote Code Execution Vulnerability
Description

Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buffers to a remote peer.

INFO

Published Date :

Nov. 11, 2023, 1:15 a.m.

Last Modified :

Nov. 29, 2023, 3:15 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2023-46850 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 Openvpn openvpn
2 Openvpn openvpn_access_server
1 Fedoraproject fedora
1 Debian debian_linux

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-2023-46850 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-46850 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
  • CVE Modified by [email protected]

    Nov. 29, 2023

    Action Type Old Value New Value
    Added Reference OpenVPN Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4/ [No types assigned]
  • Initial Analysis by [email protected]

    Nov. 28, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://community.openvpn.net/openvpn/wiki/CVE-2023-46850 No Types Assigned https://community.openvpn.net/openvpn/wiki/CVE-2023-46850 Vendor Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/ Mailing List
    Changed Reference Type https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/ No Types Assigned https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/ Vendor Advisory
    Changed Reference Type https://www.debian.org/security/2023/dsa-5555 No Types Assigned https://www.debian.org/security/2023/dsa-5555 Third Party Advisory
    Added CWE NIST CWE-416
    Added CPE Configuration OR *cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:* versions from (including) 2.6.0 up to (including) 2.6.6 *cpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:* versions from (including) 2.11.0 up to (including) 2.11.3 *cpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:* versions from (including) 2.12.0 up to (excluding) 2.12.2
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 23, 2023

    Action Type Old Value New Value
    Added Reference OpenVPN Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/ [No types assigned]
  • CVE Modified by [email protected]

    Nov. 16, 2023

    Action Type Old Value New Value
    Added Reference OpenVPN Inc. https://www.debian.org/security/2023/dsa-5555 [No types assigned]
  • CVE Received by [email protected]

    Nov. 11, 2023

    Action Type Old Value New Value
    Added Description Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buffers to a remote peer.
    Added Reference OpenVPN Inc. https://community.openvpn.net/openvpn/wiki/CVE-2023-46850 [No types assigned]
    Added Reference OpenVPN Inc. https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/ [No types assigned]
    Added CWE OpenVPN Inc. CWE-416
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-2023-46850 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-2023-46850 weaknesses.

Exploit Prediction

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

0.56 }} 0.04%

score

0.77981

percentile

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