CVE-2020-27821
CVSS V2 Low 2.1
CVSS V3 Medium 6
Description
A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.
Overview
- CVE ID
- CVE-2020-27821
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2020-12-08T22:15:18
- Last Modified Date
- 2022-09-30T19:19:22
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* | 1 | OR | 5.2.0 | |
| 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/2020/12/16/6 | Mailing List Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1902651 | Issue Tracking Patch 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-20210115-0006/ | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-27821 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27821 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:27:13 | Added to TrackCVE | |||
| 2022-12-05 17:47:18 | 2020-12-08T22:15Z | 2020-12-08T22:15:18 | CVE Published Date | updated |
| 2022-12-05 17:47:18 | 2022-09-30T19:19:22 | CVE Modified Date | updated | |
| 2022-12-05 17:47:18 | Analyzed | Vulnerability Status | updated | |
| 2022-12-05 17:47:22 | References | updated |