CVE-2023-46850: Use After Free
First published: Sat Nov 11 2023(Updated: )
Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buffers to a remote peer.
Credit: security@openvpn.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/openvpn | 2.4.7-1+deb10u1 2.5.1-3 2.6.3-1+deb12u2 2.6.7-1 | |
| OpenVPN OpenVPN | >=2.6.0<=2.6.6 | |
| OpenVPN OpenVPN access server | >=2.11.0<=2.11.3 | |
| OpenVPN OpenVPN access server | >=2.12.0<2.12.2 | |
| Debian Debian Linux | =12.0 | |
| Fedoraproject Fedora | =39 |
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Reference Links
- https://community.openvpn.net/openvpn/wiki/CVE-2023-46850
- 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://github.com/OpenVPN/openvpn/commit/9a7b95fda56127df6de6fe7c60e08fb5b67a9919
- https://github.com/OpenVPN/openvpn/commit/57a5cd1e12f193927c9b7429f8778fec7e04c50a
- https://security-tracker.debian.org/tracker/CVE-2023-46850
Frequently Asked Questions
What is CVE-2023-46850?
CVE-2023-46850 is a Use after free vulnerability in OpenVPN version 2.6.0 to 2.6.6 that may lead to undefined behavior, memory buffer leaks, or remote execution.
How can CVE-2023-46850 affect my system?
CVE-2023-46850 can potentially lead to undefined behavior, memory buffer leaks, or remote execution if network buffers are sent to a remote peer.
What software versions are affected by CVE-2023-46850?
OpenVPN versions 2.6.0 to 2.6.6 are affected by CVE-2023-46850.
What is the severity level of CVE-2023-46850?
The severity level of CVE-2023-46850 is not specified.
How can I fix CVE-2023-46850?
To fix CVE-2023-46850, update OpenVPN to version 2.6.7 or apply the applicable remedies provided by Debian.
- collector/security-tracker-debian
- agent/type
- agent/author
- agent/references
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- agent/description
- agent/first-publish-date
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- collector/mitre-cve
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- agent/last-modified-date
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- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
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- package-manager/debian
- vendor/openvpn
- canonical/openvpn openvpn
- version/openvpn openvpn/2.6.0
- version/openvpn openvpn/2.6.6
- canonical/openvpn openvpn access server
- version/openvpn openvpn access server/2.11.0
- version/openvpn openvpn access server/2.11.3
- version/openvpn openvpn access server/2.12.0
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/12.0
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/39