critical
9.3
CWE
119 79 89 20 94 121
Advisory Published
CVE Published
Updated

CVE-2023-42790: Out-of-bounds Write in captive portal

First published: Tue Mar 12 2024(Updated: )

A stack-based buffer overflow in Fortinet FortiOS 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0.0 through 7.0.12, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, FortiProxy 7.4.0, 7.2.0 through 7.2.6, 7.0.0 through 7.0.12, 2.0.0 through 2.0.13 allows attacker to execute unauthorized code or commands via specially crafted HTTP requests.

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<=7.2.5
Fortinet FortiOS IPS Engine>=7.0.0<=7.0.12
Fortinet FortiOS IPS Engine>=6.4.0<=6.4.14
Fortinet FortiOS IPS Engine>=6.2.0<=6.2.15
Fortinet FortiProxy=.
Fortinet FortiProxy>=7.2.0<=7.2.6
Fortinet FortiProxy>=7.0.0<=7.0.12
Fortinet FortiProxy>=2.0.0<=2.0.13
Fortinet FortiSASE=3
Fortinet FortiProxy>=2.0.0<=2.0.13
Fortinet FortiProxy>=7.0.0<=7.0.12
Fortinet FortiProxy>=7.2.0<=7.2.6
Fortinet FortiProxy=7.4.0
Fortinet FortiOS IPS Engine>=6.2.0<=6.2.15
Fortinet FortiOS IPS Engine>=6.4.0<=6.4.14
Fortinet FortiOS IPS Engine>=7.0.0<=7.0.12
Fortinet FortiOS IPS Engine>=7.2.0<=7.2.5
Fortinet FortiOS IPS Engine>=7.4.0<=7.4.1

Remedy

Please upgrade to FortiOS version 7.4.2 or above Please upgrade to FortiOS version 7.2.6 or above Please upgrade to FortiOS version 7.0.13 or above Please upgrade to FortiOS version 6.4.15 or above Please upgrade to FortiOS version 6.2.16 or above Please upgrade to FortiProxy version 7.4.1 or above Please upgrade to FortiProxy version 7.2.7 or above Please upgrade to FortiProxy version 7.0.13 or above Please upgrade to FortiProxy version 2.0.14 or above Fortinet in Q3/23 has remediated this issue in FortiSASE version 23.3.b and hence the customers need not perform any action.

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Reference Links

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2023-42790?

    CVE-2023-42790 has a critical severity rating due to its potential for remote code execution.

  • How do I fix CVE-2023-42790?

    To fix CVE-2023-42790, upgrade FortiOS to version 7.4.2 or later, FortiProxy to version 7.4.1 or later, or apply the relevant patches for affected versions.

  • Which software versions are affected by CVE-2023-42790?

    CVE-2023-42790 affects multiple versions of Fortinet FortiOS and FortiProxy, specifically across various versions listed in the CVE description.

  • What kind of attack can exploit CVE-2023-42790?

    CVE-2023-42790 can be exploited by an attacker to execute unauthorized code on the affected FortiOS and FortiProxy devices.

  • What products does CVE-2023-42790 impact?

    CVE-2023-42790 impacts Fortinet FortiOS and FortiProxy across multiple version ranges as outlined in the vulnerability details.

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