CVE-2018-0114
Cisco node-jose improper validation of JWT signature
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- Cisco node-jos < 0.11.0 - Re-sign Tokens2018-03-20 · webapps · multiple
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | node-jose | < 0.11.0 | 0.11.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Node-Jose | before 0.11.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- 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/
- https://github.com/advisories/GHSA-jfxm-w8g2-4rcv
- https://nvd.nist.gov/vuln/detail/CVE-2018-0114
- https://web.archive.org/web/20210124130907/http://www.securityfocus.com/bid/102445