CVE-2018-13379 (GCVE-0-2018-13379)

Vulnerability from cvelistv5 – Published: 2019-06-04 20:18 – Updated: 2025-10-21 23:45
VLAI CISA Previdian
Summary
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 portal allows an unauthenticated attacker to download system files via special crafted HTTP resource requests.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: active Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-23 13:32 UTC
CWE
  • Information disclosure
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
Fortinet Fortinet FortiOS, FortiProxy Affected: 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
Create a notification for this product.
Date Public
2019-05-24 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 883b7fba-9048-4e51-811c-29868f0d332a

Vulnerability ID: CVE-2018-13379

Status: Confirmed

Status Updated: 2021-11-03 01:00 CET

Exploited: Yes

Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: Fortinet FortiOS SSL VPN Path Traversal Vulnerability | Affected: Fortinet / FortiOS | Description: Fortinet FortiOS SSL VPN web portal contains a path traversal vulnerability that may allow an unauthenticated attacker to download FortiOS system files through specially crafted HTTP resource requests. | Required action: Apply updates per vendor instructions. | Due date: 2022-05-03 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2018-13379
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-22
Feed CISA Known Exploited Vulnerabilities Catalog
Product FortiOS
Due Date 2022-05-03
Date Added 2021-11-03
Vendorproject Fortinet
Vulnerabilityname Fortinet FortiOS SSL VPN Path Traversal Vulnerability
Knownransomwarecampaignuse Known
References
Created: 2026-10-02 08:10 CEST | Updated: 2026-10-02 08:10 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 879422db-7f0e-46f0-bb57-a535143e372a

Vulnerability ID: CVE-2018-13379

Status: Confirmed

Status Updated: 2021-11-03 01:00 CET

Exploited: Yes

Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: 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... | Affected: Fortinet / Fortinet FortiOS, FortiProxy | CVSS: 9.1 (CRITICAL) | EPSS: 0.99999 | Used in malware: yes | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Confirmed Compromise

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title 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...
Cve Id CVE-2018-13379
Vendor Fortinet
Ghsa Id None
Product Fortinet FortiOS, FortiProxy
Added Date 2021-11-03T00:00:00.000Z
Cvss Score 9.1
Epss Score 0.99999
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.99995
Used In Malware yes
Vulnerability Id CVE-2018-13379
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website
To clipboard 

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                "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13379"
              }
            ],
            "timeline": [
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                "lang": "en",
                "time": "2021-11-03T00:00:00.000Z",
                "value": "CVE-2018-13379 added to CISA KEV"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
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          "affected": [
            {
              "product": "Fortinet FortiOS, FortiProxy",
              "vendor": "Fortinet",
              "versions": [
                {
                  "status": "affected",
                  "version": "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"
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          ],
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            }
          ],
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              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.1,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
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                  "lang": "en",
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            "orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
            "shortName": "fortinet"
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            },
            {
              "tags": [
                "x_refsource_CONFIRM"
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              "url": "https://www.fortiguard.com/psirt/FG-IR-20-233"
            }
          ],
          "x_legacyV4Record": {
            "CVE_data_meta": {
              "ASSIGNER": "psirt@fortinet.com",
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              "STATE": "PUBLIC"
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            "affects": {
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                "vendor_data": [
                  {
                    "product": {
                      "product_data": [
                        {
                          "product_name": "Fortinet FortiOS, FortiProxy",
                          "version": {
                            "version_data": [
                              {
                                "version_value": "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"
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        "datePublished": "2019-06-04T20:18:08.000Z",
        "dateReserved": "2018-07-06T00:00:00.000Z",
        "dateUpdated": "2025-10-21T23:45:35.558Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
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}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.