Denial of service in FortiOS and FortiProxy SSL VPN portal



Published: 2022-10-10
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-29055
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		FortiOS
Operating systems & Components / Operating system

FortiProxy
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor Fortinet, Inc

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU68099

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-29055

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error within the SSL VPN portal. A remote attacker can send a specially crafted HTTP GET request to the system and crash the sslvpn daemon.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.0.8 - 7.2.1

FortiProxy: 2.0.0 - 7.2.0

External links

http://fortiguard.fortinet.com/psirt/FG-IR-22-086


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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