Vulnerability identifier: #VU82923

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3153

CWE-ID: CWE-770

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Open Virtual Network
Server applications / Other server solutions

Vendor: Open Virtual Network

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: 23.06.0, 23.03.0, 22.12.0, 22.09.0 - 22.09.1, 22.03.0 - 22.03.2

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

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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.