SARA / Free Tools / CVE / CVE-2023-4135

CVE-2023-4135 — A heap out-of-bounds memory read flaw was found in the virtual nvme device in QE

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 allo

CVSS
6.0 MEDIUM
EPSS
0.02% (top 94.60%)
CWE
CWE-125
Published
2023-08-04T13:19:15.760Z
Last modified
2024-08-02T07:17:11.930Z
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

01What is this vulnerability?

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.

02Affected products

VendorProductVersions
na / qemukvm — 8.1.0
Red HatRed Hat Enterprise Linux 6unspecified
Red HatRed Hat Enterprise Linux 7unspecified
Red HatRed Hat Enterprise Linux 7unspecified
Red HatRed Hat Enterprise Linux 8unspecified
Red HatRed Hat Enterprise Linux 8 Advanced Virtualizationunspecified
Red HatRed Hat Enterprise Linux 9unspecified
FedoraFedoraunspecified
FedoraExtra Packages for Enterprise Linuxunspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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