Amazon Linux 2023 Security Advisory: ALAS2023-2026-3226
Advisory Released Date: 2026-10-24
Advisory Updated Date: 2026-10-26
Severity:
Important
Issue Overview:
When using the OpenSSL library, we escaped embedded null-bytes in a certificate's subject in x509_get_subject(), but in extract_x509_field_ssl(), we copied any null-bytes that are contained in the field value. When using the option --verify-x509-name, this could lead to an incorrect name being accepted. For example, the common name "admin\0impersonator" would be accepted when running with --verify-x509-name admin name.
Fixed by: https://github.com/OpenVPN/openvpn/commit/cf4384eef4676a01bd3ee98fa602f7b2af8079ea (v2.7.8) (CVE-2026-84790)
Affected Packages:
openvpn
Issue Correction:
Run dnf update openvpn --releasever 2023.12.20261026 or dnf update --advisory ALAS2023-2026-3226 --releasever 2023.12.20261026 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
aarch64:
openvpn-debugsource-2.6.12-1.amzn2023.0.8.aarch64
openvpn-debuginfo-2.6.12-1.amzn2023.0.8.aarch64
openvpn-devel-2.6.12-1.amzn2023.0.8.aarch64
openvpn-2.6.12-1.amzn2023.0.8.aarch64
src:
openvpn-2.6.12-1.amzn2023.0.8.src
x86_64:
openvpn-debugsource-2.6.12-1.amzn2023.0.8.x86_64
openvpn-devel-2.6.12-1.amzn2023.0.8.x86_64
openvpn-debuginfo-2.6.12-1.amzn2023.0.8.x86_64
openvpn-2.6.12-1.amzn2023.0.8.x86_64