| Name | CVE-2023-46849 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-5555-1 |
| Debian Bugs | 1055805 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| openvpn (PTS) | jessie, jessie (lts) | 2.3.4-5+deb8u3 | fixed |
| stretch (security), stretch (lts), stretch | 2.4.0-6+deb9u4 | fixed |
| buster | 2.4.7-1+deb10u1 | fixed |
| bullseye | 2.5.1-3 | fixed |
| bookworm (security), bookworm | 2.6.3-1+deb12u2 | fixed |
| sid, trixie | 2.6.12-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bullseye] - openvpn <not-affected> (Vulnerable code not present)
[buster] - openvpn <not-affected> (Vulnerable code not present)
https://community.openvpn.net/openvpn/wiki/CVE-2023-46849
https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/
Fixed by: https://github.com/OpenVPN/openvpn/commit/1cfca659244e362f372d9843351257f456392a2f (v2.6.7)
[stretch] - openvpn <not-affected> (Vulnerable code not present)
[jessie] - openvpn <not-affected> (Vulnerable code not present)