SUSE update for openvpn

1) Reachable assertion

EUVDB-ID: #VU106925

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-2704

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion in server mode using TLS-crypt-v2. A remote attacker can perform a denial of service attack against the VPN server by replaying network packets in the early handshake phase.

Successful exploitation of the vulnerability requires a valid tls-crypt-v2 client key or network observation of a handshake with a valid tls-crypt-v2 client key.

Mitigation

Update the affected package openvpn to the latest version.

Vulnerable software versions

Basesystem Module: 15-SP7

SUSE Linux Enterprise Real Time 15: SP7

SUSE Linux Enterprise Server for SAP Applications 15: SP7

SUSE Linux Enterprise Server 15: SP7

SUSE Linux Enterprise Desktop 15: SP7

openvpn-debugsource: before 2.6.8-150600.3.17.1

openvpn: before 2.6.8-150600.3.17.1

openvpn-dco-debugsource: before 2.6.8-150600.3.17.1

openvpn-dco-debuginfo: before 2.6.8-150600.3.17.1

openvpn-auth-pam-plugin-debuginfo: before 2.6.8-150600.3.17.1

openvpn-dco: before 2.6.8-150600.3.17.1

openvpn-dco-devel: before 2.6.8-150600.3.17.1

openvpn-auth-pam-plugin: before 2.6.8-150600.3.17.1

openvpn-devel: before 2.6.8-150600.3.17.1

openvpn-debuginfo: before 2.6.8-150600.3.17.1

CPE2.3

• cpe:2.3:o:suse:basesystem_module:15-SP7:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_real_time_15:SP7:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_15:SP7:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_15:SP7:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_desktop_15:SP7:*:*:*:*:*:*:*
• cpe:2.3:a:suse:openvpn-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openvpn:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openvpn-dco-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openvpn-dco-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openvpn-auth-pam-plugin-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openvpn-dco:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openvpn-dco-devel:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openvpn-auth-pam-plugin:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openvpn-devel:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openvpn-debuginfo:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2025/suse-su-202501508-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.