What is CVE-2019-17656?

CVE-2019-17656 is a Stack-based Buffer Overflow vulnerability in the HTTPD daemon of FortiOS and FortiProxy, allowing an authenticated remote attacker to crash the service.

Which software versions are affected by CVE-2019-17656?

FortiOS versions up to 6.0.10, 6.2.2 and below, and FortiProxy versions up to 1.2.10, 2.0.2 and below are affected by CVE-2019-17656.

How severe is CVE-2019-17656?

CVE-2019-17656 has a severity rating of 6.5 (Medium).

How can an attacker exploit CVE-2019-17656?

An attacker can exploit CVE-2019-17656 by sending a malformed PUT request to the server.

Are there any references for CVE-2019-17656?

Yes, you can find references for CVE-2019-17656 at the following links: [Reference 1](https://fortiguard.com/advisory/FG-IR-19-248), [Reference 2](https://fortiguard.com/advisory/FG-IR-21-007).

Vulnerability/
CVE-2019-17656

medium

6.5

CWE

787 119

12/4/2021

25/10/2024

CVE-2019-17656: Buffer Overflow

First published: Mon Apr 12 2021(Updated: )

A Stack-based Buffer Overflow vulnerability in the HTTPD daemon of FortiOS 6.0.10 and below, 6.2.2 and below and FortiProxy 1.0.x, 1.1.x, 1.2.9 and below, 2.0.0 and below may allow an authenticated remote attacker to crash the service by sending a malformed PUT request to the server. Fortinet is not aware of any successful exploitation of this vulnerability that would lead to code execution.

Credit: psirt@fortinet.com

Affected Software	Affected Version	How to fix
Fortinet FortiProxy	>=1.0.0<1.2.10
Fortinet FortiProxy	>=2.0.0<2.0.2
Fortinet FortiOS	<=6.0.10
Fortinet FortiOS	>=6.2.0<=6.2.2

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Frequently Asked Questions

What is CVE-2019-17656?
CVE-2019-17656 is a Stack-based Buffer Overflow vulnerability in the HTTPD daemon of FortiOS and FortiProxy, allowing an authenticated remote attacker to crash the service.
Which software versions are affected by CVE-2019-17656?
FortiOS versions up to 6.0.10, 6.2.2 and below, and FortiProxy versions up to 1.2.10, 2.0.2 and below are affected by CVE-2019-17656.
How severe is CVE-2019-17656?
CVE-2019-17656 has a severity rating of 6.5 (Medium).
How can an attacker exploit CVE-2019-17656?
An attacker can exploit CVE-2019-17656 by sending a malformed PUT request to the server.
Are there any references for CVE-2019-17656?
Yes, you can find references for CVE-2019-17656 at the following links: [Reference 1](https://fortiguard.com/advisory/FG-IR-19-248), [Reference 2](https://fortiguard.com/advisory/FG-IR-21-007).

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agent/software-canonical-lookup-request
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agent/weakness
agent/tags
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agent/event
collector/mitre-cve
source/MITRE
vendor/fortinet
canonical/fortinet fortiproxy
version/fortinet fortiproxy/1.0.0
version/fortinet fortiproxy/2.0.0
canonical/fortinet fortios
version/fortinet fortios/6.0.10
version/fortinet fortios/6.2.0
version/fortinet fortios/6.2.2

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