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CVE-2024-21664— Parsing JSON serialized payload without protected field can lead to segfault

Quick assessment

Affected

lestrrat-go jwx

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

lestrrat-go jwx是lestrrat-go个人开发者的一个库。 lestrrat-go jwx 2.0.18及之前版本存在代码问题漏洞，该漏洞源于存在空指针取消引用问题。

CVSS 4.3 · Medium EPSS 0.86% · P59 Updated Jul 05, 2025

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

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I. Basic Information for CVE-2024-21664

Vulnerability Information

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Vulnerability Title

Parsing JSON serialized payload without protected field can lead to segfault

Source: CVE Program / CVE List V5

Vulnerability Description

jwx is a Go module implementing various JWx (JWA/JWE/JWK/JWS/JWT, otherwise known as JOSE) technologies. Calling `jws.Parse` with a JSON serialized payload where the `signature` field is present while `protected` is absent can lead to a nil pointer dereference. The vulnerability can be used to crash/DOS a system doing JWS verification. This vulnerability has been patched in versions 2.0.19 and 1.2.28.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

空指针解引用

Source: CVE Program / CVE List V5

Vulnerability Title

lestrrat-go jwx 代码问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

lestrrat-go jwx是lestrrat-go个人开发者的一个库。 lestrrat-go jwx 2.0.18及之前版本存在代码问题漏洞，该漏洞源于存在空指针取消引用问题。

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
lestrrat-go	jwx	>= 2.0.0, < 2.0.19	-

II. Public POCs for CVE-2024-21664

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2024-21664

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Patches & Fixes for CVE-2024-21664 (3)

https://github.com/lestrrat-go/jwx/commit/d69a721931a5c48b9850a42404f18e143704adcd x_refsource_MISC
https://github.com/lestrrat-go/jwx/commit/8c53d0ae52d5ab1e2b37c5abb67def9e7958fd65 x_refsource_MISC
https://github.com/lestrrat-go/jwx/commit/0e8802ce6842625845d651456493e7c87625601f x_refsource_MISC

Vendor Advisories for CVE-2024-21664 (1)

https://github.com/lestrrat-go/jwx/security/advisories/GHSA-pvcr-v8j8-j5q3 x_refsource_CONFIRM

https://www.cve.org/CVERecord?id=CVE-2024-21664

IV. Related Vulnerabilities

Same product: jwx

Same vendor: lestrrat-go

Same weakness: CWE-476