What is CVE-2018-20815?

CVE-2018-20815 is a critical-severity software vulnerability (Memory corruption) with a CVSS score of 9.8. In QEMU 3.1.0, load_device_tree in device_tree.c calls the deprecated load_image function, which has a buffer overflow risk.

Is CVE-2018-20815 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 4%.

What products does CVE-2018-20815 affect?

Tracked products affected include QEMU. Check the version you run to see whether it is affected.

How do I fix CVE-2018-20815?

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

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CVE-2018-20815

CRITICAL severity · CVSS 9.8 · Memory corruption

9.8CVSS CRITICAL

Summary

In QEMU 3.1.0, load_device_tree in device_tree.c calls the deprecated load_image function, which has a buffer overflow risk.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)4%

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

QEMU

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
https://access.redhat.com/errata/RHSA-2019:1667
https://access.redhat.com/errata/RHSA-2019:1723
https://access.redhat.com/errata/RHSA-2019:1743
https://access.redhat.com/errata/RHSA-2019:1881
https://access.redhat.com/errata/RHSA-2019:1968
https://access.redhat.com/errata/RHSA-2019:2507
https://access.redhat.com/errata/RHSA-2019:2553
https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=da885fe1ee8b4589047484bd7fa05a4905b52b17