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

2024-01-0919:18:03

CWE-476

GitHub_M

www.cve.org

cve-2024-21664

json serialized payload

jwx

jws

nil pointer dereference

patched vulnerability

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

0.001 Low

EPSS

Percentile

23.2%

JSON

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.

CNA Affected

[
  {
    "vendor": "lestrrat-go",
    "product": "jwx",
    "versions": [
      {
        "version": ">= 2.0.0, < 2.0.19",
        "status": "affected"
      },
      {
        "version": ">= 1.0.8, < 1.2.28",
        "status": "affected"
      }
    ]
  }
]