CVE-2020-12831

Name: CVE-2020-12831
Creator: NVD / NIST
Published: 2020-05-13T18:15:12.047+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.40%

Last modified Jun 17, 2026

CVE-2020-12831 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An issue was discovered in FRRouting FRR (aka Free Range Routing) through 7.3.1. When using the split-config feature, the init script creates an empty config file with world-readable default permissions, leading to a possible information leak via tools/frr.in and tools/frrcommon.sh.in. EPSS estimates a 1.40% chance of exploitation in the next 30 days.

Description

An issue was discovered in FRRouting FRR (aka Free Range Routing) through 7.3.1. When using the split-config feature, the init script creates an empty config file with world-readable default permissions, leading to a possible information leak via tools/frr.in and tools/frrcommon.sh.in. NOTE: some parties consider this user error, not a vulnerability, because the permissions are under the control of the user before any sensitive information is present in the file

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.40%

69.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions
Linuxfoundation	Free Range Routing	<= 7.3.1

References

https://bugzilla.redhat.com/show_bug.cgi?id=1830805Exploit, Issue Tracking, Vendor Advisory
https://github.com/FRRouting/frr/pull/6383Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1830805Exploit, Issue Tracking, Vendor Advisory
https://github.com/FRRouting/frr/pull/6383Patch, Third Party Advisory

Timeline

Published: May 13, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12831?

How severe is CVE-2020-12831?

CVE-2020-12831 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.40% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12831?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-12831?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST