medium
5
CWE
345
Advisory Published
CVE Published
Updated

CVE-2023-45586: SSL-VPN user IP spoofing

First published: Tue May 14 2024(Updated: )

An insufficient verification of data authenticity vulnerability [CWE-345] in Fortinet FortiOS SSL-VPN tunnel mode version 7.4.0 through 7.4.1, version 7.2.0 through 7.2.7 and before 7.0.12 & FortiProxy SSL-VPN tunnel mode version 7.4.0 through 7.4.1, version 7.2.0 through 7.2.7 and before 7.0.13 allows an authenticated VPN user to send (but not receive) packets spoofing the IP of another user via crafted network packets.

Credit: psirt@fortinet.com

Affected SoftwareAffected VersionHow to fix
Fortinet FortiOS IPS Engine>=7.4.0<=7.4.1
Fortinet FortiOS IPS Engine>=7.2.0<=7.2.7
Fortinet FortiOS IPS Engine>=7.0.0<=7.0.12
Fortinet FortiOS IPS Engine>=6.4
Fortinet FortiOS IPS Engine>=6.2
Fortinet FortiProxy>=7.4.0<=7.4.1
Fortinet FortiProxy>=7.2.0<=7.2.7
Fortinet FortiProxy>=7.0.0<=7.0.13
Fortinet FortiProxy>=2.0
Fortinet FortiProxy>=2.0.0<=2.0.12
Fortinet FortiProxy>=7.0.0<7.0.14
Fortinet FortiProxy>=7.2.0<7.2.8
Fortinet FortiProxy=7.4.0
Fortinet FortiProxy=7.4.1
Fortinet FortiOS IPS Engine>=6.2.0<=6.2.16
Fortinet FortiOS IPS Engine>=6.4.0<=6.4.15
Fortinet FortiOS IPS Engine>=7.0.0<7.0.13
Fortinet FortiOS IPS Engine>=7.2.0<7.2.8
Fortinet FortiOS IPS Engine=7.4.0
Fortinet FortiOS IPS Engine=7.4.1

Remedy

Please upgrade to FortiProxy version 7.4.2 or above Please upgrade to FortiProxy version 7.2.8 or above Please upgrade to FortiProxy version 7.0.14 or above Please upgrade to FortiOS version 7.4.2 or above Please upgrade to FortiOS version 7.2.8 or above Please upgrade to FortiOS version 7.0.13 or above Please upgrade to FortiSASE version 23.4.a or above

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-45586?

    CVE-2023-45586 has been classified with a high severity due to insufficient verification of data authenticity.

  • How do I fix CVE-2023-45586?

    To fix CVE-2023-45586, upgrade FortiOS SSL-VPN versions to 7.4.2, 7.2.8, or 7.0.13 or later.

  • Which versions are affected by CVE-2023-45586?

    CVE-2023-45586 affects Fortinet FortiOS versions 7.4.0 to 7.4.1, 7.2.0 to 7.2.7, and pre-7.0.12.

  • Does CVE-2023-45586 affect FortiProxy?

    Yes, CVE-2023-45586 also affects FortiProxy versions 7.4.0 to 7.4.1 and 7.2.0 to 7.2.7.

  • What is the CVSS score of CVE-2023-45586?

    CVE-2023-45586 has a CVSS score that indicates a high risk to the confidentiality, integrity, and availability of affected systems.

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