Format string errors in HTTPSd in Fortinet products



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-36639
CWE-ID CWE-134
Exploitation vector Network
Public exploit N/A
Vulnerable software
 FortiProxy
Hardware solutions / Routers & switches, VoIP, GSM, etc

FortiPAM
Server applications / Directory software, identity management

FortiOS
Operating systems & Components / Operating system

Vendor Fortinet, Inc

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Format string error

EUVDB-ID: #VU84439

Risk: Medium

CVSSv4.0: 6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-36639

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

Exploit availability: No

Description

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

The vulnerability exists due to a format string error in HTTPSd. A remote privileged user can send a specially crafted request 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

FortiProxy: 7.0.0 - 7.2.4

FortiPAM: 1.0.0 - 1.1.0

FortiOS: 6.0.0 - 7.4.0

CPE2.3 External links

https://fortiguard.com/psirt/FG-IR-23-138


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged 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.



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