Denial of service in Fortinet FortiWeb



Published: 2021-01-05
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-29019
CWE-ID CWE-121
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Fortinet FortiWeb
Server applications / Remote management servers, RDP, SSH

Vendor Fortinet, Inc

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Stack-based buffer overflow

EUVDB-ID: #VU49280

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]

CVE-ID: CVE-2020-29019

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error when processing HTTP cookies. A remote authenticated user can send a specially crafted HTTP request with a malformed HTTP cookies and crash the httpd daemon.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Fortinet FortiWeb: 6.2.0 - 6.3.7

External links

http://www.fortiguard.com/psirt/%20FG-IR-20-126


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 application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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