CVE-2024-4420: tink c\+\+ Improper Encoding — Fix

Description

There exists a Denial of service vulnerability in Tink-cc in versions prior to 2.1.3. * An adversary can crash binaries using the crypto::tink::JsonKeysetReader in tink-cc by providing an input that is not an encoded JSON object, but still a valid encoded JSON element, for example a number or an array. This will crash as Tink just assumes any valid JSON input will contain an object. * An adversary can crash binaries using the crypto::tink::JsonKeysetReader in tink-cc by providing an input containing many nested JSON objects. This may result in a stack overflow. We recommend upgrading to version 2.1.3 or above

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-116 CWE-116

Affected Products

Vendor	Product	Versions
google	tink_c\+\+	< 2.1.3

References

Advisories & Patches

https://github.com/tink-crypto/tink-cc/issues/4 https://github.com/tink-crypto/tink-cc/issues/4

Frequently Asked Questions

What is CVE-2024-4420? +

There exists a Denial of service vulnerability in Tink-cc in versions prior to 2.1.3. * An adversary can crash binaries using the crypto::tink::JsonKeysetReader in tink-cc by providing an input that is not an encoded JSON object, but still a valid encoded JSON element, for example a number or an array. This will crash as Tink just assumes any valid JSON input will contain an object. * An adversary can crash binaries using the crypto::tink::JsonKeysetReader in tink-cc by providing an input containing many nested JSON objects. This may result in a stack overflow. We recommend upgrading to version 2.1.3 or above It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-4420? +

CVE-2024-4420 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-4420? +

CVE-2024-4420 affects products from google, specifically: tink_c\+\+. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-4420? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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