CVE-2018-13383 (GCVE-0-2018-13383)

Vulnerability from cvelistv5 – Published: 2019-05-29 17:20 – Updated: 2025-10-21 23:45
VLAI? CISA KEV
Summary
A heap buffer overflow in Fortinet FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier and FortiProxy 2.0.0, 1.2.8 and earlier in the SSL VPN web portal may cause the SSL VPN web service termination for logged in users due to a failure to properly handle javascript href data when proxying webpages.
Severity ?
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE
  • Denial of service
Assigner
References
Impacted products
Vendor Product Version
Fortinet Fortinet FortiOS and FortiProxy Affected: FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier, FortiProxy 2.0.0, 1.2.8 and earlier
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CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 13181331-9a0f-4bc1-a62d-4df460d9ee7f

Vulnerability ID: CVE-2018-13383

Status: Confirmed

Status Updated: 2022-01-10 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2022-01-10
Asserted: 2022-01-10
Scope
Notes: KEV entry: Fortinet FortiOS and FortiProxy Out-of-bounds Write | Affected: Fortinet / FortiOS and FortiProxy | Description: A heap buffer overflow in Fortinet FortiOS and FortiProxy may cause the SSL VPN web service termination for logged in users. | Required action: Apply updates per vendor instructions. | Due date: 2022-07-10 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2018-13383
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-787
Feed CISA Known Exploited Vulnerabilities Catalog
Product FortiOS and FortiProxy
Due Date 2022-07-10
Date Added 2022-01-10
Vendorproject Fortinet
Vulnerabilityname Fortinet FortiOS and FortiProxy Out-of-bounds Write
Knownransomwarecampaignuse Known
References
Created: 2026-02-02 12:28 UTC | Updated: 2026-02-06 07:17 UTC
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.