Multiple vulnerabilities in Fortinet FortiOS



Published: 2023-06-13
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2023-29180
CVE-2023-29181
CVE-2023-29179
CWE-ID CWE-476
CWE-134
Exploitation vector Network
Public exploit N/A
Vulnerable software
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FortiOS
Operating systems & Components / Operating system

Vendor Fortinet, Inc

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU77178

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-2023-29180

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. A remote non-authenticated attacker can send a specially crafted HTTP request to the /proxy endpoint and crash the SSL-VPN daemon.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.0.0 - 7.2.4

External links

http://fortiguard.fortinet.com/psirt/FG-IR-23-111


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.

2) Format string error

EUVDB-ID: #VU77177

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-29181

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 the Fclicense daemon. A remote user can send specially crafted requests to the daemon 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

FortiOS: 4.1.1 - 7.2.4

External links

http://fortiguard.fortinet.com/psirt/FG-IR-23-119


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) NULL pointer dereference

EUVDB-ID: #VU77176

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-2023-29179

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error. A remote user can send a specially crafted HTTP request to the /proxy endpoint and crash the SSL-VPN daemon.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.4.0 - 7.2.4

External links

http://fortiguard.fortinet.com/psirt/FG-IR-23-125


Q & A

Can this vulnerability be exploited remotely?

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