CVE-2020-12831
** DISPUTED ** An issue was discovered in FRRouting FRR (aka Free Range Routing) through 7.3.1....
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
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
5.3
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
- Record
CVE-2020-12831- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:N - Weakness
- CWE-732
- Updated
- 2026-11-02
CVE List No score
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
- Record
CVE-2020-12831- Updated
- 2026-11-02
EUVDEUVD-2020-5113 No score
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
- Record
EUVD-2020-5113- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-x83m-q23q-xv5j
5.3
** DISPUTED ** An issue was discovered in FRRouting FRR (aka Free Range Routing) through 7.3.1....
** DISPUTED ** 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.
- Record
GHSA-x83m-q23q-xv5j- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200, CWE-732
- Updated
- 2026-11-02
OSV
5.3
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
- Record
CVE-2020-12831- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-12831
5.3
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
- Record
DEBIAN-CVE-2020-12831- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVRHSA-2020:4619
5.3
Red Hat Security Advisory: frr security and bug fix update
- Record
RHSA-2020:4619- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVALSA-2020:4619 No score
Moderate: frr security and bug fix update
FRRouting is free software that manages TCP/IP based routing protocols. It supports BGP4, OSPFv2, OSPFv3, ISIS, RIP, RIPng, PIM, NHRP, PBR, EIGRP and BFD.
Security Fix(es):
- frr: default permission issue eases information leaks (CVE-2020-12831)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.
- Record
ALSA-2020:4619- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10583-1 No score
frr-7.5.1-3.1 on GA media
These are all security issues fixed in the frr-7.5.1-3.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10583-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
frr-contribAlmaLinux:8 |
before 7.0-10.el8 | 7.0-10.el8 |
frrDebian:12 |
All versions, plus listed versions 10.0-0.110.0-0.210.0-110.0-210.0.1-0.1 Show 45 moreShow less10.1-0.110.1-0.210.1.1-0.110.1.1-110.1.1-210.1.1-310.2-110.2-210.2.1-110.2.1-210.2.1-310.2.1-410.2.1-510.2.1-610.3-110.3-210.3-310.3-410.3-510.3.1-110.3.1-210.3.1-310.3.1-410.4.0-110.4.1-110.4.1-210.4.1-310.5.0-110.5.0-210.5.1-110.5.1-210.5.1-310.5.2-110.5.3-110.6.0-110.6.0-210.6.1-110.6.1-210.6.1-310.7.0-110.7.0-210.7.1-110.7.1-210.7.1-310.7.1-4 |
None known |
frrDebian:13 |
All versions, plus listed versions 10.3-310.3-3+deb13u110.3-410.3-510.3.1-1 Show 27 moreShow less10.3.1-210.3.1-310.3.1-410.4.0-110.4.1-110.4.1-210.4.1-310.5.0-110.5.0-210.5.1-110.5.1-210.5.1-310.5.2-110.5.3-110.6.0-110.6.0-210.6.1-110.6.1-210.6.1-310.7.0-110.7.0-210.7.1-110.7.1-210.7.1-310.7.1-410.7.1-510.7.1-6 |
None known |
frrDebian:14 |
All versions, plus listed versions 10.3-310.3-410.3-510.3.1-110.3.1-2 Show 26 moreShow less10.3.1-310.3.1-410.4.0-110.4.1-110.4.1-210.4.1-310.5.0-110.5.0-210.5.1-110.5.1-210.5.1-310.5.2-110.5.3-110.6.0-110.6.0-210.6.1-110.6.1-210.6.1-310.7.0-110.7.0-210.7.1-110.7.1-210.7.1-310.7.1-410.7.1-510.7.1-6 |
None known |
frrRed Hat:enterprise_linux:8::appstream |
before 0:7.0-10.el8 | 0:7.0-10.el8 |
frr-contribRed Hat:enterprise_linux:8::appstream |
before 0:7.0-10.el8 | 0:7.0-10.el8 |
frr-debuginfoRed Hat:enterprise_linux:8::appstream |
before 0:7.0-10.el8 | 0:7.0-10.el8 |
frr-debugsourceRed Hat:enterprise_linux:8::appstream |
before 0:7.0-10.el8 | 0:7.0-10.el8 |
frropenSUSE:Tumbleweed |
before 7.5.1-3.1 | 7.5.1-3.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-12831 is a medium vulnerability (CVSS 5.3) in Linuxfoundation Free Range Routing, published May 13, 2020. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 1.43%, the 73rd percentile. Fixed in frr-contrib 7.0-10.el8.
References
bugzilla.redhat.com/show_bug.cgi?id=1830805
github.com/FRRouting/frr/pull/6383
nvd.nist.gov/vuln/detail/CVE-2020-12831
github.com/advisories/GHSA-x83m-q23q-xv5j
vulners.com/cve/CVE-2020-12831
security-tracker.debian.org/tracker/CVE-2020-12831
Show 11 moreShow less
access.redhat.com/errata/RHSA-2020:4619
access.redhat.com/security/updates/classification
access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.3_release_notes
bugzilla.redhat.com/show_bug.cgi?id=1758544
bugzilla.redhat.com/show_bug.cgi?id=1776342
bugzilla.redhat.com/show_bug.cgi?id=1819319
bugzilla.redhat.com/show_bug.cgi?id=1867793
security.access.redhat.com/data/csaf/v2/advisories/2020/rhsa-2020_4619.json
access.redhat.com/security/cve/CVE-2020-12831
cve.org/CVERecord?id=CVE-2020-12831
suse.com/security/cve/CVE-2020-12831
Left out here: 8 versions. The JSON record has them.