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 Software | Affected Version | How 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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Reference Links
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.
- collector/nvd-api
- collector/nvd-index
- agent/author
- agent/type
- agent/softwarecombine
- agent/weakness
- agent/remedy
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- collector/fortiguard-psirt
- source/FortiGuard
- alias/CVE-2023-42782
- agent/severity
- agent/title
- agent/references
- agent/first-publish-date
- agent/description
- agent/tags
- collector/fortiguard-psirt-latest
- agent/event
- agent/trending
- vendor/fortinet
- canonical/fortinet fortianalyzer
- version/fortinet fortianalyzer/6.2.0
- version/fortinet fortianalyzer/6.2.12
- version/fortinet fortianalyzer/6.4.0
- version/fortinet fortianalyzer/6.4.13
- version/fortinet fortianalyzer/7.0.0
- version/fortinet fortianalyzer/7.0.9
- version/fortinet fortianalyzer/7.2.0
- version/fortinet fortianalyzer/7.2.3
- version/fortinet fortianalyzer/7.4.0