CVE-2021-20221
CVSS V2 Low 2.1
CVSS V3 Medium 6
Description
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.
Overview
- CVE ID
- CVE-2021-20221
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Modified
- Published Version
- 2021-05-13T16:15:07
- Last Modified Date
- 2023-02-12T22:15:17
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:arm64:* | 1 | OR | 4.2.0 | |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 2.1
- Severity
- LOW
- Exploitability Score
- 3.9
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- HIGH
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6
- Base Severity
- MEDIUM
- Exploitability Score
- 1.5
- Impact Score
- 4
References
| Reference URL | Reference Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2021/02/05/1 | Mailing List Patch Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2021:1125 | |
| https://access.redhat.com/errata/RHSA-2021:2521 | |
| https://access.redhat.com/errata/RHSA-2021:3061 | |
| https://access.redhat.com/security/cve/CVE-2021-20221 | |
| https://bugs.launchpad.net/qemu/+bug/1914353 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1924601 | Issue Tracking Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210708-0005/ | Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2021/02/05/1 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-20221 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20221 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:41:39 | Added to TrackCVE | |||
| 2022-12-05 02:13:50 | 2021-05-13T16:15Z | 2021-05-13T16:15:07 | CVE Published Date | updated |
| 2022-12-05 02:13:50 | 2022-09-30T15:18:54 | CVE Modified Date | updated | |
| 2022-12-05 02:13:50 | Analyzed | Vulnerability Status | updated | |
| 2022-12-05 02:13:54 | References | updated | ||
| 2023-02-02 23:11:59 | 2023-02-02T21:20:52 | CVE Modified Date | updated | |
| 2023-02-02 23:11:59 | Analyzed | Modified | Vulnerability Status | updated |
| 2023-02-02 23:11:59 | 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. | An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU on 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. | Description | updated |
| 2023-02-02 23:12:01 | References | updated | ||
| 2023-02-12 23:11:50 | 2023-02-12T22:15:17 | CVE Modified Date | updated | |
| 2023-02-12 23:11:50 | Weakness Enumeration | update | ||
| 2023-02-12 23:11:50 | An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU on 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. | 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. | Description | updated |