Format string vulnerability in Fortinet FortiWeb



Published: 2021-01-05
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-29018
CWE-ID CWE-134
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) Format string error

EUVDB-ID: #VU49279

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-29018

CWE-ID: CWE-134 - Use of Externally-Controlled Format String

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to a format string error when processing data passed via the "redir" parameter. A remote authenticated user can send a specially crafted request containing format string specifiers and read contents of memory on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Fortinet FortiWeb: 6.3.0 - 6.3.5

External links

http://www.fortiguard.com/psirt/FG-IR-20-123


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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