CVE-2020-27672
CVSS V2 Medium 6.9
CVSS V3 High 7
Description
An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a host OS denial of service, achieve data corruption, or possibly gain privileges by exploiting a race condition that leads to a use-after-free involving 2MiB and 1GiB superpages.
Overview
- CVE ID
- CVE-2020-27672
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-10-22T21:15:13
- Last Modified Date
- 2022-04-26T16:23:17
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* | 1 | OR | 3.2.0 | 4.14.0 |
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:M/Au:N/C:C/I:C/A:C
- Access Vector
- LOCAL
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 6.9
- Severity
- MEDIUM
- Exploitability Score
- 3.4
- Impact Score
- 10
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- HIGH
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 7
- Base Severity
- HIGH
- Exploitability Score
- 1
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://xenbits.xen.org/xsa/advisory-345.html | Patch Vendor Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202011-06 | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ | Mailing List Third Party Advisory |
| https://www.debian.org/security/2020/dsa-4804 | Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2021/01/19/7 | Mailing List Third Party Advisory |
| http://xenbits.xen.org/xsa/advisory-345.html | Patch Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-27672 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27672 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:26:28 | Added to TrackCVE | |||
| 2022-12-05 00:55:22 | 2020-10-22T21:15Z | 2020-10-22T21:15:13 | CVE Published Date | updated |
| 2022-12-05 00:55:22 | 2022-04-26T16:23:17 | CVE Modified Date | updated | |
| 2022-12-05 00:55:22 | Analyzed | Vulnerability Status | updated |