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[email protected]CVE-2021-3416

HistoryMar 18, 2021 - 8:15 p.m.

CVE-2021-3416

2021-03-1820:15:13

CWE-835

[email protected]

web.nvd.nist.gov

299

cve-2021-3416

qemu

nic emulators

stack overflow

infinite loop

nvd

security issue

dos

2.1 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.2 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

19.2%

JSON

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.

Affected configurations

Vulners

NVD

Node

qemuqemuRange≤5.2.0

VendorProductVersionCPE
qemuqemu*cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
qemu	qemu	*	cpe:2.3:a:qemu:qemu::::::::

CNA Affected

[
  {
    "product": "QEMU",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "versions up to and including 5.2.0"
      }
    ]
  }
]