Vulnerability Monitor

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CVE-2023-4135

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.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.0, requiring local system access to exploit with relatively low complexity without requiring user interaction . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 2 products from qemu, from fedoraproject organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2023, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2023-08-04T14:15:12.173

Last Modified

2024-11-21T08:34:27.810

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.0 (MEDIUM)

Weaknesses

Type: Secondary
CWE-125
Type: Primary
CWE-125

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	qemu	qemu	< 8.1.0	Yes
Application	qemu	qemu	8.1.0	Yes
Application	qemu	qemu	8.1.0	Yes
Application	qemu	qemu	8.1.0	Yes
Operating System	fedoraproject	fedora	38	Yes

References

https://access.redhat.com/security/cve/CVE-2023-4135 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=2229101 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20230915-0012/ Third Party Advisory ([email protected])
https://www.zerodayinitiative.com/advisories/ZDI-CAN-21521 Broken Link, Third Party Advisory, VDB Entry ([email protected])
https://access.redhat.com/security/cve/CVE-2023-4135 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=2229101 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20230915-0012/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.zerodayinitiative.com/advisories/ZDI-CAN-21521 Broken Link, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For qemu's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.