Denial of service in Open Virtual Network OVN

1) Allocation of Resources Without Limits or Throttling

EUVDB-ID: #VU82923

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-3153

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

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

The vulnerability exists due to improper rate limitation in the service monitor MAC. A remote attacker can perform a denial of service attack against deployments with CoPP enabled and properly configured.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Open Virtual Network: 22.03.0 - 23.06.0

CPE2.3

• cpe:2.3:a:ovn:ovn:22.03.2:*:*:*:*:*:*:*
• cpe:2.3:a:ovn:ovn:22.09.1:*:*:*:*:*:*:*
• cpe:2.3:a:ovn:ovn:22.12.0:*:*:*:*:*:*:*
• cpe:2.3:a:ovn:ovn:23.03.0:*:*:*:*:*:*:*
• cpe:2.3:a:ovn:ovn:23.06.0:*:*:*:*:*:*:*

External links

https://mail.openvswitch.org/pipermail/ovs-announce/2023-August/000327.html
https://access.redhat.com/security/cve/CVE-2023-3153
https://bugzilla.redhat.com/show_bug.cgi?id=2213279
https://mail.openvswitch.org/pipermail/ovs-dev/2023-August/407553.html
https://github.com/ovn-org/ovn/commit/9a3f7ed905e525ebdcb14541e775211cbb0203bd
https://github.com/ovn-org/ovn/issues/198

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.