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CVE-2023-4135

6.0 · MEDIUM

A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU.

Published Aug 4, 2023CWE-125EPSS 0.37%

Overview

CVE-2023-4135 is a medium-severity vulnerability. It was published on August 4, 2023 and has a CVSS 3.1 base score of 6.0 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.0, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.

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/security/cve/CVE-2023-4135Refbugzilla.redhat.com/show_bug.cgi?id=2229101Refsecurity.netapp.com/advisory/ntap-20230915-0012/Refwww.zerodayinitiative.com/advisories/ZDI-CAN-21521Refaccess.redhat.com/security/cve/CVE-2023-4135Refbugzilla.redhat.com/show_bug.cgi?id=2229101Refsecurity.netapp.com/advisory/ntap-20230915-0012/Refwww.zerodayinitiative.com/advisories/ZDI-CAN-21521

How CyberStrike helps

Frequently asked questions

What is CVE-2023-4135?

CVE-2023-4135 is a medium-severity vulnerability. It was published on August 4, 2023 and has a CVSS 3.1 base score of 6.0 (MEDIUM).

How severe is CVE-2023-4135?

This vulnerability has a CVSS 3.1 base score of 6.0, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-4135?

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-2023-4135?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-4135 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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