CVE-2018-0114 EXPLOIT
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 7.5 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| EPSS | 42.65% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-347 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2018-01-04 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| cisco | node-jose |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Cisco node-jos < 0.11.0 - Re-sign Tokens | 2018-03-20 |
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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