CVE-2018-0114

2018-01-0406:00:00

CWE-347

cisco

www.cve.org

0.024 Low

EPSS

Percentile

90.0%

JSON

A vulnerability in the Cisco node-jose open source library before 0.11.0 could allow an unauthenticated, remote attacker to re-sign tokens using a key that is embedded within the token. The vulnerability is due to node-jose following the JSON Web Signature (JWS) standard for JSON Web Tokens (JWTs). This standard specifies that a JSON Web Key (JWK) representing a public key can be embedded within the header of a JWS. This public key is then trusted for verification. An attacker could exploit this by forging valid JWS objects by removing the original signature, adding a new public key to the header, and then signing the object using the (attacker-owned) private key associated with the public key embedded in that JWS header.

CNA Affected

[
  {
    "product": "Node-jose Library",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Node-jose Library"
      }
    ]
  }
]