Executive Summary

Informations
Name CVE-2021-20221 First vendor Publication 2021-05-13
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
Overall CVSS Score 6
Base Score 6 Environmental Score 6
impact SubScore 4 Temporal Score 6
Exploitabality Sub Score 1.5
 
Attack Vector Local Attack Complexity Low
Privileges Required High User Interaction None
Scope Changed Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 2.1 Attack Range Local
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on aarch64 platform. The issue occurs because while writing an interrupt ID to the controller memory area, it is not masked to be 4 bits wide. It may lead to the said issue while updating controller state fields and their subsequent processing. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20221

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-125 Out-of-bounds Read

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 188
Os 2
Os 2

Sources (Detail)

Source Url
CONFIRM https://security.netapp.com/advisory/ntap-20210708-0005/
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1924601
MLIST http://www.openwall.com/lists/oss-security/2021/02/05/1
https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html

Alert History

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Date Informations
2024-02-02 02:21:04
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2024-02-01 12:22:32
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2023-11-07 21:34:56
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2023-09-05 13:15:25
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2023-09-05 01:22:07
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2023-09-02 13:14:08
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2023-09-02 01:22:25
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2023-08-12 13:20:00
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2023-08-12 01:21:38
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2023-08-11 13:12:35
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2023-08-11 01:22:19
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2023-08-06 13:10:41
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2023-08-06 01:21:23
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2023-08-04 13:11:03
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2023-08-04 01:21:44
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2023-07-14 13:11:05
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2023-07-14 01:21:34
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2023-03-29 02:13:27
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2023-03-28 12:21:49
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2023-02-13 00:27:33
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2023-02-03 05:27:40
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2022-10-28 12:57:47
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2022-10-11 13:03:31
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2022-10-11 01:21:22
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2022-09-30 21:27:40
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2022-09-05 12:53:00
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2021-12-11 00:23:11
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2021-08-05 01:41:31
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2021-07-08 12:40:27
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2021-06-04 21:23:14
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2021-05-20 01:41:14
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2021-05-20 01:40:11
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2021-05-19 17:22:49
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2021-05-18 05:22:49
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2021-05-13 21:23:10
  • First insertion