SB2025040985 - Authenticated denial of service in FortiOS SSL VPN

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Main Vulnerability Database SB2025040985

SB2025040985 - Authenticated denial of service in FortiOS SSL VPN

Published: April 9, 2025

Security Bulletin ID SB2025040985
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) NULL pointer dereference (CVE-ID: CVE-2023-42785)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in SSL VPN service. A remote user can send a specially crafted HTTP request and crash the system.


2) NULL pointer dereference (CVE-ID: CVE-2023-42786)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in SSL VPN service. A remote user can send a specially crafted HTTP request and crash the system.


Remediation

Install update from vendor's website.

References