CVE-2023-46849

HIGH

OpenVPN <2.6.6 - DoS

Title source: llm

Description

Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.

References (5)

[Vendor Advisory] https://community.openvpn.net/openvpn/wiki/CVE-2023-46849

[Mailing List] https://lists.fedoraproject.org/archives/list/[email protected]/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/[email protected]/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4/

[Vendor Advisory] https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/

[Third Party Advisory] https://www.debian.org/security/2023/dsa-5555

Scores

CVSS v3 7.5

EPSS 0.0048

EPSS Percentile 64.7%

Attack Vector NETWORK

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

Classification

CWE

CWE-369

Status published

Affected Products (6)

openvpn/openvpn < 2.6.6

openvpn/openvpn_access_server < 2.11.3

openvpn/openvpn_access_server

debian/debian_linux

fedoraproject/fedora

Timeline

Published Nov 11, 2023

Tracked Since Feb 18, 2026