CVE-2021-3416

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1932827

https://www.openwall.com/lists/oss-security/2021/02/26/1

https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html

https://security.netapp.com/advisory/ntap-20210507-0002/

Details

Source: MITRE

Published: 2021-03-18

Updated: 2022-01-04

Type: CWE-835

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 6

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Impact Score: 4

Exploitability Score: 1.5

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to 5.2.0 (inclusive)

Configuration 2

OR

cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

Configuration 3

OR

cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*

cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*

Configuration 4

OR

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Tenable Plugins

View all (23 total)

IDNameProductFamilySeverity
156489EulerOS Virtualization 3.0.2.6 : qemu-kvm (EulerOS-SA-2021-2855)NessusHuawei Local Security Checks
medium
153803RHEL 8 : virt:av and virt-devel:av (RHSA-2021:3703)NessusRed Hat Local Security Checks
high
152538Oracle Linux 8 : virt:ol / and / virt-devel:rhel (ELSA-2021-3061)NessusOracle Linux Local Security Checks
medium
152461CentOS 8 : virt:rhel and virt-devel:rhel (CESA-2021:3061)NessusCentOS Local Security Checks
medium
152445RHEL 8 : virt:rhel and virt-devel:rhel (RHSA-2021:3061)NessusRed Hat Local Security Checks
medium
152199SUSE SLES11 Security Update : kvm (SUSE-SU-2021:14772-1)NessusSuSE Local Security Checks
medium
151714openSUSE 15 Security Update : qemu (openSUSE-SU-2021:1942-1)NessusSuSE Local Security Checks
medium
151680Ubuntu 18.04 LTS / 20.04 LTS / 20.10 / 21.04 : QEMU vulnerabilities (USN-5010-1)NessusUbuntu Local Security Checks
high
151333EulerOS Virtualization for ARM 64 3.0.2.0 : qemu-kvm (EulerOS-SA-2021-2125)NessusHuawei Local Security Checks
medium
151231EulerOS Virtualization 3.0.6.6 : qemu-kvm (EulerOS-SA-2021-2046)NessusHuawei Local Security Checks
medium
151162EulerOS Virtualization for ARM 64 3.0.6.0 : qemu-kvm (EulerOS-SA-2021-2011)NessusHuawei Local Security Checks
medium
150736SUSE SLED15 / SLES15 Security Update : qemu (SUSE-SU-2021:1942-1)NessusSuSE Local Security Checks
medium
149640openSUSE Security Update : qemu (openSUSE-2021-600)NessusSuSE Local Security Checks
medium
148966SUSE SLES12 Security Update : qemu (SUSE-SU-2021:1305-1)NessusSuSE Local Security Checks
high
148761SUSE SLES12 Security Update : qemu (SUSE-SU-2021:1241-1)NessusSuSE Local Security Checks
high
148758SUSE SLES12 Security Update : qemu (SUSE-SU-2021:1240-1)NessusSuSE Local Security Checks
high
148757SUSE SLES15 Security Update : qemu (SUSE-SU-2021:1244-1)NessusSuSE Local Security Checks
high
148755SUSE SLED15 / SLES15 Security Update : qemu (SUSE-SU-2021:1243-1)NessusSuSE Local Security Checks
medium
148752SUSE SLES15 Security Update : qemu (SUSE-SU-2021:1245-1)NessusSuSE Local Security Checks
high
148751SUSE SLES12 Security Update : qemu (SUSE-SU-2021:1242-1)NessusSuSE Local Security Checks
high
148632EulerOS Virtualization 2.9.0 : qemu (EulerOS-SA-2021-1763)NessusHuawei Local Security Checks
medium
148583EulerOS Virtualization 2.9.1 : qemu (EulerOS-SA-2021-1735)NessusHuawei Local Security Checks
medium
148442Debian DLA-2623-1 : qemu security updateNessusDebian Local Security Checks
medium