Format string error in Fortinet FortiManager, FortiAnalyzer, FortiAnalyzer-BigData and FortiPortal

1) Format string error

EUVDB-ID: #VU87527

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-41842

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

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to a format string error. A local administrator can supply a specially crafted input that contains format string specifiers and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiManager: 6.2.0 - 7.4.1

FortiAnalyzer: 6.2.0 - 7.4.1

FortiPortal: 5.3.0 - 6.0.14

FortiAnalyzer BigData: 6.2.5 - 7.2.5

External links

http://fortiguard.com/psirt/FG-IR-23-304

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

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.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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