#VU65749 Improper Verification of Cryptographic Signature in node-forge - CVE-2022-24771

Vulnerability identifier: #VU65749

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-24771

CWE-ID: CWE-347

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
node-forge
Web applications / Modules and components for CMS

Vendor: Synex Technologies

Description

The vulnerability allows a remote attacker to bypass security restrictions.

The vulnerability exists due to a improper signature verification when checking the digestAlgorithm structure. A remote unauthenticated attacker can use a specially-crafted structure to steal padding bytes and use unchecked portion of the PKCS#1 encoded message to exploit this vulnerability and forge a signature when a low public exponent is being used.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

node-forge: 1.0.0 - 1.2.1

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External links
https://github.com/digitalbazaar/forge/security/advisories/GHSA-cfm4-qjh2-4765
https://github.com/digitalbazaar/forge/commit/3f0b49a0573ef1bb7af7f5673c0cfebf00424df1

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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.