CVE-2021-4158
CVSS V2 None
CVSS V3 Medium 6
Description
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
Overview
- CVE ID
- CVE-2021-4158
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Modified
- Published Version
- 2022-08-24T16:15:09
- Last Modified Date
- 2023-02-12T23:43:19
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* | 1 | OR | 6.0.0 | 7.0.0 |
| cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | 1 | OR |
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 |
|---|---|
| https://access.redhat.com/errata/RHSA-2022:1759 | |
| https://access.redhat.com/errata/RHSA-2022:7967 | |
| https://access.redhat.com/security/cve/CVE-2021-4158 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2035002 | Issue Tracking Patch Third Party Advisory |
| https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827e | Patch Third Party Advisory |
| https://gitlab.com/qemu-project/qemu/-/issues/770 | Exploit Third Party Advisory |
| https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-4158 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4158 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-08-24 17:00:14 | Added to TrackCVE | |||
| 2023-02-02 23:14:06 | 2023-02-02T21:21:49 | CVE Modified Date | updated | |
| 2023-02-02 23:14:06 | Analyzed | Modified | Vulnerability Status | updated |
| 2023-02-02 23:14:08 | References | updated | ||
| 2023-02-13 00:14:48 | 2023-02-12T23:43:19 | CVE Modified Date | updated |