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CVE-2023-2156

7.5 · HIGH

A flaw was found in the networking subsystem of the Linux kernel within the handling of the RPL protocol.

Published May 9, 2023CWE-617EPSS 6.18%

Overview

CVE-2023-2156 is a high-severity vulnerability. It was published on May 9, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A flaw was found in the networking subsystem of the Linux kernel within the handling of the RPL protocol. This issue results from the lack of proper handling of user-supplied data, which can lead to an assertion failure. This may allow an unauthenticated remote attacker to create a denial of service condition on the system.

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/2023/05/17/8Refwww.openwall.com/lists/oss-security/2023/05/17/9Refwww.openwall.com/lists/oss-security/2023/05/18/1Refwww.openwall.com/lists/oss-security/2023/05/19/1Refbugzilla.redhat.com/show_bug.cgi?id=2196292Reflists.debian.org/debian-lts-announce/2023/08/msg00001.htmlRefsecurity.netapp.com/advisory/ntap-20230622-0001/Refwww.debian.org/security/2023/dsa-5448Refwww.debian.org/security/2023/dsa-5453Refwww.zerodayinitiative.com/advisories/ZDI-23-547/

How CyberStrike helps

Frequently asked questions

What is CVE-2023-2156?

CVE-2023-2156 is a high-severity vulnerability. It was published on May 9, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-2156?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-2156?

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-2023-2156?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-2156 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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