CWE
345
Advisory Published
CVE Published
Updated
Advisory Published

CVE-2023-42782: Syslog not protected by an extra layer of authentication

First published: Tue Oct 10 2023(Updated: )

A insufficient verification of data authenticity vulnerability [CWE-345] in FortiAnalyzer version 7.4.0 and below 7.2.3 allows a remote unauthenticated attacker to send messages to the syslog server of FortiAnalyzer via the knoweldge of an authorized device serial number.

Credit: psirt@fortinet.com psirt@fortinet.com

Affected SoftwareAffected VersionHow to fix
Fortinet FortiAnalyzer>=6.2.0<=6.2.12
Fortinet FortiAnalyzer>=6.4.0<=6.4.13
Fortinet FortiAnalyzer>=7.0.0<=7.0.9
Fortinet FortiAnalyzer>=7.2.0<=7.2.3
Fortinet FortiAnalyzer=7.4.0

Remedy

Please upgrade to FortiAnalyzer version 7.4.1 or above Please upgrade to FortiAnalyzer version 7.2.4 or above AND  Configure the "un-encrypted-logging" option to disable receiving syslog without encryption through UDP(514) or TCP(514). config system log setting     set un-encrypted-logging disable

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Frequently Asked Questions

  • What is the vulnerability ID for this vulnerability?

    The vulnerability ID is CVE-2023-42782.

  • What is the severity of CVE-2023-42782?

    The severity of CVE-2023-42782 is medium with a severity value of 5.3.

  • Which software is affected by CVE-2023-42782?

    FortiAnalyzer versions 6.2.0 to 6.2.12, 6.4.0 to 6.4.13, 7.0.0 to 7.0.9, and 7.2.0 to 7.2.3 are affected by CVE-2023-42782.

  • How does CVE-2023-42782 work?

    CVE-2023-42782 allows a remote unauthenticated attacker to send messages to the syslog server of FortiAnalyzer using the knowledge of an authorized device serial number.

  • Is there a fix for CVE-2023-42782?

    Yes, Fortinet has released a fix for CVE-2023-42782. It is recommended to upgrade to FortiAnalyzer version 7.4.1 or later.

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