CVE-2021-3416

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.

CVSS v3.0 6.0 MEDIUM
CVSS v2.0 2.1 LOW

6.0^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.5 / Impact : 4.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

2.1^/10

CVSS v2.0 : LOW

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

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1932827	Issue Tracking Patch Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/02/26/1	Mailing List Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20210507-0002/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Configuration 2 (hide)

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

Configuration 3 (hide)

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 (hide)

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

Information

Published : 2021-03-18 20:15

Updated : 2022-01-04 16:38

NVD link : CVE-2021-3416

Mitre link : CVE-2021-3416

JSON object : View

Products Affected

fedoraproject

fedora

redhat

enterprise_linux

debian

debian_linux

qemu

qemu

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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