Multiple Node.js CVEs
FG-IR-26-187
Summary
CVSSv3 Score:
7.5
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 certificatesTLS servers consuming client certificatesHosting providers taking certificates or private keys from customersCertificate authorities parsing certification requests from subscribersAnything else which parses ASN.1 elliptic curve parametersAlso 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).
Revised on 2026-08-27 00:00:00
Products covered
A separate affected-products list was not included in the collected bulletin.
Remediation
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).
CVEs in this advisory 1
Updates
- Published by Fortinet
The publication date reported by the vendor.
- Added to SecurityAlert
We collected the advisory from the official source.
- Updated by Fortinet
The vendor changed the advisory after it was first published.
- Confirmed at the source
Our collector saw this advisory during a later source check.