PSIRTVulnerability in OpenSSL library
Summary
A security advisory was released affecting the version of OpenSSL library used in some Fortinet products:
CVE-2022-0778:
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).
Affected Products
FortiOS version 6.0.0 through 6.0.14
FortiOS version 6.2.0 through 6.2.10
FortiOS version 6.4.0 through 6.4.8
FortiOS version 7.0.0 through 7.0.5
FortiManager version 6.2.0 through 6.2.9
FortiManager version 6.4.0 through 6.4.7
FortiManager version 7.0.0 through 7.0.3
FortiAnalyzer version 6.2.0 through 6.2.9
FortiAnalyzer version 6.4.0 through 6.4.7
FortiAnalyzer version 7.0.0 through 7.0.3
FortiDeceptor version 3.x all versions
FortiDeceptor version 4.0 all versions
FortiDeceptor version 4.1.0
FortiAuthenticator version 6.0 all versions
FortiAuthenticator version 6.1 all versions
FortiAuthenticator version 6.2 all versions
FortiAuthenticator version 6.3 all versions
FortiAuthenticator version 6.4.0 through 6.4.1
FortiMail version 6.0 all versions
FortiMail version 6.2.0 through 6.2.8
FortiMail version 6.4.0 through 6.4.6
FortiMail version 7.0.0 through 7.0.3
FortiRecorder version 6.0.0 through 6.0.10
FortiRecorder version 6.4.0 through 6.4.2
FortiProxy version 7.0.0 through 7.0.3
FortiSwitch version 6.0 all versions
FortiSwitch version 6.2 all versions
FortiSwitch version 6.4.0 through 6.4.10
FortiSwitch version 7.0.0 through 7.0.4
FortiWeb version 6.3.0 through 6.3.18
FortiWeb version 6.4.0 through 6.4.2
FortiWeb version 7.0.0
FortiADCManager version 5.x all versions
FortiADCManager version 6.x all versions
FortiSIEM version 5.0 all versions
FortiSIEM version 6.1 all versions
FortiSIEM version 6.2 all versions
FortiSIEM version 6.3 all versions
FortiSIEM version 6.4.0
FortiVoiceEnterprise version 6.0.0 through 6.0.11
FortiVoiceEnterprise version 6.4.0 through 6.4.4
FortiNDR version 1.x all versions
FortiClientWindows version 6.2 all versions
FortiClientWindows version 6.4.0 through 6.4.8
FortiClientWindows version 7.0.0 through 7.0.3
FortiClientEMS version 6.2 all versions
FortiClientEMS version 6.4.0 through 6.4.7
FortiClientEMS version 7.0.0 through 7.0.3
FortiADC version 6.0 all versions
FortiADC version 6.1 all versions
FortiADC version 6.2.0 through 6.2.3
FortiADC version 7.0.0 through 7.0.1
FortiTester 7.1.0 and below
FortiAIOps 1.0.x
FortiAP version 7.2.0
FortiAP version 7.0 all versions
FortiAP version 6.4 all versions
FortiAP version 6.0 all versions
FortiAP-W2 version 7.2.0
FortiAP-W2 version 7.0 all versions
FortiAP-W2 version 6.4 all versions
FortiClientMac version 7.0.0 through 7.0.5
FortiClientMac version 6.4.0 through 6.4.8
FortiClientMac version 6.2 all versions
FortiClientLinux version 7.0.0 through 7.0.5
FortiClientLinux version 6.4 all versions
FortiClientLinux version 6.2 all versions
FortiClientiOS version 6.0 all versions
FortiClientiOS version 5.0 all versions
FortiDDoS-F version 6.3.0 through 6.3.3
FortiDDoS-F version 6.2.0 through 6.2.2
FortiDDoS-F version 6.1.0 through 6.1.4
FortiClientAndroid version 6.0 all versions
FortiClientAndroid version 5.0 all versions
FortiIsolator version 2.4.0
FortiIsolator version 2.3.0 through 2.3.4
FortiIsolator version 2.2 all versions
FortiIsolator version 2.1 all versions
FortiIsolator version 2.0 all versions
FortiWAN version 4.5.0 through 4.5.9
FortiWAN version 4.4 all versions
FortiWAN version 4.3 all versions
FortiDDoS 5.6 all versions
FortiDDoS 5.5 all versions
FortiDDoS 5.4 all versions
FortiDDoS 5.3 all versions
FortiDDoS 5.2 all versions
FortiDDoS 5.1 all versions
FortiDDoS 5.0 all versions
FortiDDoS 4.7 all versions
FortiDDoS 4.6 all versions
FortiDDoS 4.5 all versions
FortiDDoS 4.4 all versions
The Following Products are not impacted:
FortiSandbox
The following products are under investigation:
FortiAP-S
FortiAP-U
FortiConnect
FortiEdge
FortiPentest
FortiWLM
FortiWLC
Solutions
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.