Vulnerability identifier: #VU86295

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3966

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Open vSwitch
Hardware solutions / Firmware

Vendor: openvswitch.org

Description

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

The vulnerability exists due to a boundary condition when handling Geneve packets. A remote attacker can send specially crafted Geneve packets with HF offload to the system, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Open vSwitch: 3.2.0 - 3.2.1, 3.1.0 - 3.1.3, 3.0.0 - 3.0.5, 2.17.0 - 2.17.8, 2.16.0 - 2.16.7, 2.15.0 - 2.15.8, 2.14.0 - 2.14.9, 2.13.0 - 2.13.11, 2.12.0 - 2.12.4

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External links
http://mail.openvswitch.org/pipermail/ovs-announce/2024-February/000339.html

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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.