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CVE-2023-5366

7.1 · HIGH

A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules.

Published Oct 6, 2023CWE-345EPSS 0.42%

Overview

CVE-2023-5366 is a high-severity vulnerability. It was published on October 6, 2023 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary IP addresses.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.openwall.com/lists/oss-security/2024/02/08/4Refaccess.redhat.com/security/cve/CVE-2023-5366Refbugzilla.redhat.com/show_bug.cgi?id=2006347Reflists.debian.org/debian-lts-announce/2024/02/msg00004.htmlReflists.fedoraproject.org/archives/list/[email protected]/message/LFZADABUDOFI2KZIRQBYFZCIKH55RGY3/Reflists.fedoraproject.org/archives/list/[email protected]/message/VYYUBF6OW2JG7VOFEOROHXGSJCTES3QO/Refwww.openwall.com/lists/oss-security/2024/02/08/4Refaccess.redhat.com/security/cve/CVE-2023-5366Refbugzilla.redhat.com/show_bug.cgi?id=2006347Reflists.debian.org/debian-lts-announce/2024/02/msg00004.html

How CyberStrike helps

Frequently asked questions

What is CVE-2023-5366?

CVE-2023-5366 is a high-severity vulnerability. It was published on October 6, 2023 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2023-5366?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-5366?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-5366?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-5366 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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