National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-0114 Detail

Current 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.

Source:  MITRE      Last Modified:  01/04/2018      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2018-0114
Original release date:
01/04/2018
Last revised:
01/24/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
7.5 High
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N (legend)
Impact Score:
3.6
Exploitability Score:
3.9
CVSS Version 3 Metrics:
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
High
Availability (A):
None
CVSS Severity (version 2.0):
CVSS v2 Base Score:
5.0 MEDIUM
Vector:
(AV:N/AC:L/Au:N/C:N/I:P/A:N) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://www.securityfocus.com/bid/102445 Third Party Advisory; VDB Entry External Source BID 102445
https://github.com/cisco/node-jose/blob/master/CHANGELOG.md Release Notes; Third Party Advisory External Source CONFIRM https://github.com/cisco/node-jose/blob/master/CHANGELOG.md
https://tools.cisco.com/security/center/viewAlert.x?alertId=56326 Patch; Vendor Advisory External Source CONFIRM https://tools.cisco.com/security/center/viewAlert.x?alertId=56326

Technical Details

Vulnerability Type (View All)

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