What’s Vulnerable › Vulnerabilities

CVE-2018-0114

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 42.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-01-04 · updated 2026-06-17
• Weakness: CWE-347

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.

Affected products

• HackerOne node-jose node module: before 0.11.0 — fixed in 0.11.0

How to fix

Upgrade to a fixed version: HackerOne node-jose node module 0.11.0. Check the vendor advisory for mitigations.

References

• http://www.securityfocus.com/bid/102445
• https://github.com/cisco/node-jose/blob/master/CHANGELOG.md
• https://github.com/zi0Black/POC-CVE-2018-0114
• https://tools.cisco.com/security/center/viewAlert.x?alertId=56326
• https://www.exploit-db.com/exploits/44324/
• http://www.securityfocus.com/bid/102445
• https://github.com/cisco/node-jose/blob/master/CHANGELOG.md
• https://github.com/zi0Black/POC-CVE-2018-0114
• https://tools.cisco.com/security/center/viewAlert.x?alertId=56326
• https://www.exploit-db.com/exploits/44324/

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