CVE-20XX-?
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CVE-2020-14367

6.0 MEDIUM 0.5% exploit odds Fix listed

What it is

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.

At a glance

Exploitability
Can be exploited locally on the machine with an admin-level account. High risk of data tampering, service disruption.
Exploit odds
0.5% chance of exploitation in the next 30 days (EPSS).
Fix
A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

  1. PublishedDisclosed publicly on CVE.org and NVD
  2. Last updatedMost recent change to the record

Why it ranks here

Details

Published
Last modified
Exploit probability
0.5% · EPSS, next 30 days
Weakness
CWE-59
Record status
Modified

Affected

Attack profile CVSS 3.1 · 6.0

Attack vector
Local
Complexity
Low
Privileges needed
High
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Raw vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record