Out-of-bounds read information disclosure vulnerability
CVE-2023-4135

6.5MEDIUM

Key Information:

Vendor
Red Hat
Status
qemu-kvm
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
4 August 2023

Summary

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.

Affected Version(s)

qemu-kvm 8.1.0

References

https://access.redhat.com/security/cve/CVE-2023-4135
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2229101
issue-trackingx_refsource_REDHAT
https://www.zerodayinitiative.com/advisories/ZDI-CAN-21521

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database

Credit

Red Hat would like to thank Trend Micro Zero Day Initiative for reporting this issue.
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