CVE-2021-20319
CVSS V2 Medium 6.8
CVSS V3 High 7.8
Description
An improper signature verification vulnerability was found in coreos-installer. A specially crafted gzip installation image can bypass the image signature verification and as a consequence can lead to the installation of unsigned content. An attacker able to modify the original installation image can write arbitrary data, and achieve full access to the node being installed.
Overview
- CVE ID
- CVE-2021-20319
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2022-03-04T18:15:08
- Last Modified Date
- 2022-03-11T15:37:35
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:redhat:coreos-installer:*:*:*:*:*:*:*:* | 1 | OR | 0.10.1 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 7.8
- Base Severity
- HIGH
- Exploitability Score
- 1.8
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/coreos/coreos-installer/security/advisories/GHSA-3r3g-g73x-g593 | Third Party Advisory |
| https://github.com/coreos/coreos-installer/pull/659/commits/ad243c6f0eff2835b2da56ca5f7f33af76253c89 | Patch Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2011862 | Issue Tracking Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-20319 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20319 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 15:46:17 | Added to TrackCVE | |||
| 2022-12-06 11:21:11 | 2022-03-04T18:15Z | 2022-03-04T18:15:08 | CVE Published Date | updated |
| 2022-12-06 11:21:11 | 2022-03-11T15:37:35 | CVE Modified Date | updated | |
| 2022-12-06 11:21:11 | Analyzed | Vulnerability Status | updated |