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No exploitation reportedFix available

CVE-2020-12831

No exploitation reported by the sources we read.

  • Published2020-05-13
  • WeaknessCWE-732

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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

Timeline

dates in UTC
  1. 2020-05-1318:15CVE publishedNVD

Versions per branch

NVD
Linuxfoundation free range routing
BranchAffectedFixed in
7.3≤ 7.3.1no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • frrRed Hat:enterprise_linux:8::appstreamall versions · fixed in 0:7.0-10.el8and 3 other packages
  • frropenSUSE:Tumbleweedall versions · fixed in 7.5.1-3.1
  • frrDebian:14all versions · no fixed version listed
  • frrDebian:13all versions · no fixed version listed
  • frrDebian:12all versions · no fixed version listed
  • frr-contribAlmaLinux:8all versions · fixed in 7.0-10.el8

Vendor advisories

  • CVE-2020-12831 Red Hat Product Security17 products fixed

    frr: default permission issue eases information leaks

  • RHSA-2020:4619 Red Hat Product Security17 products fixed

    Red Hat Security Advisory: frr security and bug fix update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2020:4619 · 17 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Published
2020-05-13
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-x83m-q23q-xv5j

Frequently asked questions

What is CVE-2020-12831?

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

Is CVE-2020-12831 actively exploited?

Active exploitation of CVE-2020-12831 has not been confirmed. Its EPSS score was 1.4% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-12831?

CVE-2020-12831 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

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