Fortinet Fortigate (FG-IR-22-059)

high Nessus Plugin ID 200529

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Synopsis

Fortinet Firewall is missing one or more security-related updates.

Description

The version of Fortigate installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the FG-IR-22-059 advisory.

- The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate which makes it slightly harder to trigger the infinite loop. However any operation which requires the public key from the certificate will trigger the infinite loop. In particular the attacker can use a self- signed certificate to trigger the loop during verification of the certificate signature. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc). (CVE-2022-0778)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Please upgrade to FortiOS version 6.0.15 or above.
Please upgrade to FortiOS version 6.2.11 or above.
Please upgrade to FortiOS version 6.4.9 or above.
Please upgrade to FortiOS version 7.0.6 or above.
Please upgrade to FortiOS version 7.2.0 or above.
Please upgrade to FortiManager version 6.4.8 or above.
Please upgrade to FortiManager version 7.0.4 or above.
Please upgrade to FortiManager version 7.2.0 or above.
Please upgrade to FortiAnalyzer version 6.4.8 or above Please upgrade to FortiAnalyzer version 7.0.4 or above Please upgrade to FortiAnalyzer version 7.2.0 or above Please upgrade to FortiAuthenticator version 6.4.2 or above Please upgrade to FortiAuthenticator version 6.5.0 or above Please upgrade to FortiDeceptor version 4.2.0 or above Please upgrade to FortiMail version 7.2.0 or above Please upgrade to FortiMail version 7.0.4 or above Please upgrade to FortiMail version 6.4.7 or above Please upgrade to FortiMail version 6.2.9 or above Please upgrade to FortiRecorder version 7.0.0 or above Please upgrade to FortiRecorder version 6.4.3 or above Please upgrade to FortiRecorder version 6.0.11 or above Please upgrade to FortiProxy version 7.0.4 or above Please upgrade to FortiWeb version 7.0.1 or above Please upgrade to FortiWeb version 6.4.3 or above Please upgrade to FortiWeb version 6.3.19 or above Please upgrade to FortiSwitch version 7.2.0 or above Please upgrade to FortiSwitch version 7.0.5 or above Please upgrade to FortiSwitch version 6.4.11 or above Please upgrade to FortiADCManager version 7.0.0 or above Please upgrade to FortiSIEM 6.5.0 or above Please upgrade to FortiNDR 7.0.0 or above Please upgrade to FortiVoiceEnterprise 6.4.5 or above Please upgrade to FortiVoiceEnterprise 6.0.12 or above Please upgrade to FortiClientWindows 7.0.4 or above Please upgrade to FortiClientWindows 6.4.9 or above Please upgrade to FortiClientEMS 7.0.4 or above Please upgrade to FortiClientEMS 6.4.8 or above Please upgrade to FortiADC 7.1.0 or above Please upgrade to FortiADC 7.0.2 or above Please upgrade to FortiADC 6.2.4 or above Please upgrade to FortiTester 7.2.0 or above Please upgrade to FortiAIOps 1.1.0 or above Please upgrade to FortiPortal 7.0.0 or above Please upgrade to FortiAP version 7.2.1 or above Please upgrade to FortiAP-W2 version 7.2.1 or above Please upgrade to FortiClientMac version 7.0.6 or above Please upgrade to FortiClientMac version 6.4.9 or above Please upgrade to FortiClientLinux version 7.0.6 or above Please upgrade to FortiClientiOS version 7.0.3 or above Please upgrade to FortiClientAndroid version 7.0.3 or above Please upgrade to FortiIsolator 2.4.1 or above Please upgrade to FortiIsolator 2.3.5 or above Please upgrade to FortiWAN version 4.5.10 or above Please upgrade to FortiDDoS-F version 6.4.0 or above Please upgrade to FortiDDoS version 5.7.0 or above Protection with IPS signature:
Upgrade to IPS definitions version 20.292 or above, and make sure the action for signature 51345 is set to block.

Plugin Details

Severity: High

ID: 200529

File Name: fortigate_FG-IR-22-059.nasl

Version: 1.1

Type: local

Family: Firewalls

Published: 6/14/2024

Updated: 6/14/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2022-0778

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:fortinet:fortios

Required KB Items: Host/Fortigate/model, Host/Fortigate/version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/1/2022

Vulnerability Publication Date: 3/15/2022

Reference Information

CVE: CVE-2022-0778

Detections

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