What is CVE-2018-13379?

CVE-2018-13379 is a critical-severity vulnerability in Fortinet Fortios, Fortiproxy. CVSS score: 9.1/10. Published 2019-06-04.

How severe is CVE-2018-13379?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2018-13379 known to be exploited?

Yes. CVE-2018-13379 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 96 public proof-of-concept repositories are indexed.

Vulnerability in Fortinet Fortios, Fortiproxy

CVE-2018-13379

An Improper Limitation of a Pathname to a Restricted Directory ("Path Traversal") in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.3 to 5.6.7 and 5.4.6 to 5.4.12 and FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7 under SSL VPN web…

EPSS: 0.945 (100.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Fortinet Fortios, Fortiproxy — versions FortiOS 6.0.0 to 6.0.4, 5.6.3 to 5.6.7 and 5.4.6 to 5.4.12, FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-05-03.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

fortiguard.com/advisory/FG-IR-18-384 (x_refsource_CONFIRM)
www.fortiguard.com/psirt/FG-IR-20-233 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2018-13379?: CVE-2018-13379 is a critical-severity vulnerability in Fortinet Fortios, Fortiproxy. CVSS score: 9.1/10. Published 2019-06-04.
How severe is CVE-2018-13379?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2018-13379 known to be exploited?: Yes. CVE-2018-13379 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 96 public proof-of-concept repositories are indexed.