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CVE-2023-4387

7.1 · HIGH

A use-after-free flaw was found in vmxnet3_rq_alloc_rx_buf in drivers/net/vmxnet3/vmxnet3_drv.c in VMware's vmxnet3 ethernet NIC driver in the Linux Kernel.

Published Aug 16, 2023CWE-416EPSS 0.24%

Overview

CVE-2023-4387 is a high-severity vulnerability. It was published on August 16, 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 requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A use-after-free flaw was found in vmxnet3_rq_alloc_rx_buf in drivers/net/vmxnet3/vmxnet3_drv.c in VMware's vmxnet3 ethernet NIC driver in the Linux Kernel. This issue could allow a local attacker to crash the system due to a double-free while cleaning up vmxnet3_rq_cleanup_all, which could also lead to a kernel information leak problem.

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

Refaccess.redhat.com/errata/RHSA-2022:7683Refaccess.redhat.com/errata/RHSA-2022:8267Refaccess.redhat.com/security/cve/CVE-2023-4387Refbugzilla.redhat.com/show_bug.cgi?id=2219270GitHubgithub.com/torvalds/linux/commit/9e7fef9521e73ca8afd7da9e58c14654b02dfad8Refaccess.redhat.com/security/cve/CVE-2023-4387Refbugzilla.redhat.com/show_bug.cgi?id=2219270GitHubgithub.com/torvalds/linux/commit/9e7fef9521e73ca8afd7da9e58c14654b02dfad8

How CyberStrike helps

Frequently asked questions

What is CVE-2023-4387?

CVE-2023-4387 is a high-severity vulnerability. It was published on August 16, 2023 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2023-4387?

This vulnerability has a CVSS 3.1 base score of 7.1, 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-2023-4387?

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-2023-4387?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-4387 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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