CVE Vulnerability

CVE-2018-0114

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://tools.cisco.com/security/center/viewAlert.x?alertId=56326 Patch Vendor Advisory
https://github.com/cisco/node-jose/blob/master/CHANGELOG.md Release Notes Third Party Advisory
http://www.securityfocus.com/bid/102445 Third Party Advisory VDB Entry
https://github.com/zi0Black/POC-CVE-2018-0114 Exploit Third Party Advisory
https://www.exploit-db.com/exploits/44324/ Third Party Advisory VDB Entry
Configurations

Configuration 1

cpe:2.3:a:cisco:node-jose:*:*:*:*:*:*:*:*
Information

Published : 2018-01-04 06:29

Updated : 2020-09-04 04:58

NVD link : CVE-2018-0114

Mitre link : CVE-2018-0114

Products Affected
No products.
CWE
CWE-347

Improper Verification of Cryptographic Signature