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CVE-2023-3390

7.8 · HIGH

A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c.

Published Jun 28, 2023CWE-416EPSS 0.91%

Overview

CVE-2023-3390 is a high-severity vulnerability. It was published on June 28, 2023 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c.

Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue.

We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97

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

Refgit.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1240eb93f0616b21c675416516ff3d74798fdc97Refkernel.dance/1240eb93f0616b21c675416516ff3d74798fdc97Reflists.debian.org/debian-lts-announce/2023/08/msg00001.htmlReflists.debian.org/debian-lts-announce/2024/01/msg00004.htmlReflists.debian.org/debian-security-announce/2023/msg00140.htmlReflists.debian.org/debian-security-announce/2023/msg00153.htmlRefpacketstorm.news/tos/aHR0cHM6Ly9wYWNrZXRzdG9ybS5uZXdzL2ZpbGVzLzE3NDU3Ny9LZXJuZWwtTGl2ZS1QYXRjaC1TZWN1cml0eS1Ob3RpY2UtTFNOLTAwOTctMS5odG1sIDE3ODQ3MjE0NzIgODFlMjk3ZjBmM2FiMTIwOTI5Nzg0ZmRlNGM2NWNjNjBhMThhMzBiOGE5NjQ0YzQ0NTFhMzJlZjhiNTk1ZTk2Yg==Refsecurity.netapp.com/advisory/ntap-20230818-0004/Refpacketstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.htmlRefgit.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1240eb93f0616b21c675416516ff3d74798fdc97

How CyberStrike helps

Frequently asked questions

What is CVE-2023-3390?

CVE-2023-3390 is a high-severity vulnerability. It was published on June 28, 2023 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-3390?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-3390?

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-2023-3390?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-3390 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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