Stack-based buffer overflow in FortiProxy



Published: 2021-04-06
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-17656
CWE ID CWE-121
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
FortiProxy
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor Fortinet, Inc

Security Advisory

This security advisory describes one medium risk vulnerability.

1) Stack-based buffer overflow

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-17656

CWE-ID: CWE-121 - Stack-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing HTTP PUT requests in FortiProxy HTTPD daemon. A remote authenticated user can send a specially crafted HTTP PUT request, trigger stack-based buffer overflow and crash the daemon.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiProxy: 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.2.7, 1.2.8, 1.2.9, 2.0.0, 2.0.1

CPE External links

https://www.fortiguard.com/psirt/FG-IR-21-007

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



###SIDEBAR###