CVE-2022-24773 : Security Advisory and Response

Node-forge, a native JavaScript implementation of Transport Layer Security, is vulnerable to improper RSA PKCS#1 v1.5 signature verification prior to version 1.3.0. This vulnerability allows successful verification of signatures with invalid structures. Upgrade to version 1.3.0 to address this issue.

Understanding CVE-2022-24773

This CVE describes a security vulnerability in the

node-forge

library that could be exploited by attackers to bypass cryptographic signature verification.

What is CVE-2022-24773?

CVE-2022-24773 highlights a flaw in the RSA PKCS#1 v1.5 signature verification code of

node-forge

, where it does not properly verify the

DigestInfo

for a correct ASN.1 structure. As a result, attackers can create signatures with invalid structures that still pass verification.

The Impact of CVE-2022-24773

The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 5.3. It affects the integrity of systems, allowing attackers to potentially bypass signature verification mechanisms.

Technical Details of CVE-2022-24773

Below are the technical details relevant to CVE-2022-24773:

Vulnerability Description

The vulnerability arises from the inadequate verification of the

DigestInfo

ASN.1 structure, enabling the verification of signatures with invalid structures.

Affected Systems and Versions

Node-forge versions prior to 1.3.0 are impacted by this vulnerability. Users running affected versions are advised to upgrade to version 1.3.0.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting signatures with invalid structures that still pass the verification process.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-24773, users and system administrators can take the following steps:

Immediate Steps to Take

Upgrade

node-forge

to version 1.3.0 to address the vulnerability.

Long-Term Security Practices

Regularly monitor for security advisories and updates related to

node-forge

.
Implement secure coding practices to reduce the likelihood of cryptographic vulnerabilities.

Patching and Updates

Stay informed about the latest security patches and updates released by the

node-forge

project.