Public Date:
1636773: CVE-2018-17962 Qemu: pcnet: integer overflow leads to buffer overflow
An integer overflow issue was found in the AMD PC-Net II NIC emulation in QEMU. It could occur while receiving packets, if the size value was greater than INT_MAX. Such overflow would lead to stack buffer overflow issue. A user inside guest could use this flaw to crash the QEMU process resulting in DoS.

Find out more about CVE-2018-17962 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 6.5
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Impact Low
Availability Impact High

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 7 qemu-kvm-rhev Not affected
Red Hat Enterprise Linux 7 qemu-kvm Not affected
Red Hat Enterprise Linux 7 qemu-kvm-ma Not affected
Red Hat Enterprise Linux 6 qemu-kvm Affected
Red Hat Enterprise Linux 5 kvm Not affected
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.


Red Hat would like to thank Daniel Shapira (Twistlock) and Arash Tohidi for reporting this issue.
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