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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OpenVPNCNA
---
---
CVEADP
---
---
CISA-ADPADP
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 64%
VendorProductVersion
openvpnopenvpn
2.6.0 ≤
𝑥
≤ 2.6.6
openvpnopenvpn_access_server
2.11.0 ≤
𝑥
≤ 2.11.3
openvpnopenvpn_access_server
2.12.0
openvpnopenvpn_access_server
2.12.1
debiandebian_linux
12.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
openvpn
bullseye
2.5.1-3
not-affected
buster
not-affected
bookworm
2.6.3-1+deb12u2
fixed
bookworm (security)
2.6.3-1+deb12u2
fixed
sid
2.6.12-1
fixed
trixie
2.6.12-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
openvpn
mantic
Fixed 2.6.5-0ubuntu1.1
released
lunar
Fixed 2.6.1-1ubuntu1.1
released
jammy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
not-affected
Common Weakness Enumeration
References
https://community.openvpn.net/openvpn/wiki/CVE-2023-46849
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4/
https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/
https://www.debian.org/security/2023/dsa-5555
https://community.openvpn.net/openvpn/wiki/CVE-2023-46849
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4/
https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/
https://www.debian.org/security/2023/dsa-5555