SUSE update for openvswitch

1) Security features bypass

EUVDB-ID: #VU103659

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L/E:U/U:Green]

CVE-ID: CVE-2025-0650

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to improper handling of UDP packets. A remote attacker can send specially crafted UDP packets that bypass egress access control lists (ACLs) in OVN installations and gain unauthorized access to virtual machines and containers running on the OVN network.

Successful exploitation of the vulnerability requires that ACLs on OVN installations are configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured.

Mitigation

Update the affected package openvswitch to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 12 SP5 LTSS Extended: Security

SUSE Linux Enterprise Server 12 SP5: LTSS

SUSE Linux Enterprise Server for SAP Applications 12: SP5

SUSE Linux Enterprise Server 12: SP5

SUSE Linux Enterprise High Performance Computing 12: SP5

openvswitch-debugsource: before 2.11.5-3.24.2

openvswitch: before 2.11.5-3.24.2

libopenvswitch-2_11-0-debuginfo: before 2.11.5-3.24.2

libopenvswitch-2_11-0: before 2.11.5-3.24.2

openvswitch-debuginfo: before 2.11.5-3.24.2

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_server_12_sp5_ltss_extended:Security:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_12_sp5:LTSS:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_12:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_12:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:openvswitch-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:openvswitch:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libopenvswitch-2_11-0-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libopenvswitch-2_11-0:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:openvswitch-debuginfo:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2025/suse-su-20250561-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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