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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2020-14367 Detail

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.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1870298 Issue Tracking  Patch  Vendor Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=1870298 Issue Tracking  Patch  Vendor Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6WKABKNLCSC3MACCWU6OM2YGWVWFWFMU/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6WKABKNLCSC3MACCWU6OM2YGWVWFWFMU/
https://security.gentoo.org/glsa/202008-23 Third Party Advisory 
https://security.gentoo.org/glsa/202008-23 Third Party Advisory 
https://usn.ubuntu.com/4475-1/ Third Party Advisory 
https://usn.ubuntu.com/4475-1/ Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-59 Improper Link Resolution Before File Access ('Link Following') cwe source acceptance level NIST   Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

7 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-14367
NVD Published Date:
08/24/2020
NVD Last Modified:
11/21/2024
Source:
Red Hat, Inc.