CVE-2023-46849
Published: 15 November 2023
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | 2.6.0+ only |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
openvpn Launchpad, Ubuntu, Debian |
upstream |
Released
(2.6.7-1)
|
| bionic |
Not vulnerable
|
|
| focal |
Not vulnerable
(2.4.7-1ubuntu2.20.04.4)
|
|
| jammy |
Not vulnerable
(2.5.5-1ubuntu3.1)
|
|
| lunar |
Released
(2.6.1-1ubuntu1.1)
|
|
| mantic |
Released
(2.6.5-0ubuntu1.1)
|
|
| trusty |
Not vulnerable
|
|
| xenial |
Not vulnerable
|
|
|
Patches: upstream: https://github.com/OpenVPN/openvpn/commit/1cfca659244e362f372d9843351257f456392a2f |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-46849
- https://community.openvpn.net/openvpn/wiki/CVE-2023-46849
- https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/
- https://ubuntu.com/security/notices/USN-6484-1
- NVD
- Launchpad
- Debian