CVE-2020-14367
CVSS V2 Low 3.6
CVSS V3 Medium 6
Description
A flaw was found in chrony versions before 3.5.1 when creating the PID file under the /var/run/chrony folder. The file is created during chronyd startup while still running as the root user, and when it's opened for writing, chronyd does not check for an existing symbolic link with the same file name. This flaw allows an attacker with privileged access to create a symlink with the default PID file name pointing to any destination file in the system, resulting in data loss and a denial of service due to the path traversal.
Overview
- CVE ID
- CVE-2020-14367
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2020-08-24T15:15:13
- Last Modified Date
- 2022-12-06T20:50:33
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:tuxfamily:chrony:*:*:*:*:*:*:*:* | 1 | OR | 3.5.1 | |
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:N/I:P/A:P
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 3.6
- Severity
- LOW
- Exploitability Score
- 3.9
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- HIGH
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6
- Base Severity
- MEDIUM
- Exploitability Score
- 0.8
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6WKABKNLCSC3MACCWU6OM2YGWVWFWFMU/ | Mailing List Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1870298 | Issue Tracking Patch Vendor Advisory |
| https://security.gentoo.org/glsa/202008-23 | Third Party Advisory |
| https://usn.ubuntu.com/4475-1/ |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-14367 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14367 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:25:00 | Added to TrackCVE | |||
| 2022-12-04 21:25:44 | 2020-08-24T15:15Z | 2020-08-24T15:15:13 | CVE Published Date | updated |
| 2022-12-04 21:25:44 | 2020-09-09T14:15:12 | CVE Modified Date | updated | |
| 2022-12-04 21:25:44 | Undergoing Analysis | Vulnerability Status | updated | |
| 2022-12-06 21:11:02 | 2022-12-06T20:50:33 | CVE Modified Date | updated | |
| 2022-12-06 21:11:02 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |