CVE-2018-0114

CVE: CVE-2018-0114
Published: 2018-01-04T06:29Z
Description Language: en
Description: 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.
References:
http://www.securityfocus.com/bid/102445
https://github.com/cisco/node-jose/blob/master/CHANGELOG.md
https://tools.cisco.com/security/center/viewAlert.x?alertId=56326