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CVE-2018-0114

7.5 · HIGH

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.

Published Jan 4, 2018CWE-347EPSS 42.65%

Overview

CVE-2018-0114 is a high-severity vulnerability. It was published on January 4, 2018 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.securityfocus.com/bid/102445GitHubgithub.com/cisco/node-jose/blob/master/CHANGELOG.mdGitHubgithub.com/zi0Black/POC-CVE-2018-0114Reftools.cisco.com/security/center/viewAlert.x?alertId=56326Refwww.exploit-db.com/exploits/44324/Refwww.securityfocus.com/bid/102445GitHubgithub.com/cisco/node-jose/blob/master/CHANGELOG.mdGitHubgithub.com/zi0Black/POC-CVE-2018-0114Reftools.cisco.com/security/center/viewAlert.x?alertId=56326Refwww.exploit-db.com/exploits/44324/

How CyberStrike helps

Frequently asked questions

What is CVE-2018-0114?

CVE-2018-0114 is a high-severity vulnerability. It was published on January 4, 2018 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2018-0114?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-0114?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-0114?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-0114 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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