Vulnerability in Openvpn Access Server
CVE-2023-46849
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.012 (65.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Openvpn Access Server — versions 2.11.0, 2.12.0
- Openvpn
- Openvpn 2 (Community) — versions 2.6.0
- Openvpn Access Server — versions 2.12.0, 2.12.1
- Debian Linux — versions 12.0
- Fedoraproject Fedora — versions 39
Weakness classification (CWE)
Public proof-of-concept exploits
References
- community.openvpn.net/openvpn/wiki/CVE-2023-46849 (Vendor Advisory)
- openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-… (Vendor Advisory)
- www.debian.org/security/2023/dsa-5555 (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Mailing List)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/…
Frequently asked questions
- What is CVE-2023-46849?
- CVE-2023-46849 is a high-severity vulnerability in Openvpn Access Server, classified under Divide By Zero. CVSS score: 7.5/10. Published 2023-11-11.
- How severe is CVE-2023-46849?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-46849 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.