CVE-2018-0114
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 42.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 42.65% probability · 99th percentile
- Public exploits
- 1 in Exploit-DB · first 20 March 2018
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- cisco/node-jose
- Source
- psirt@cisco.com
EPSS 42.7% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.securityfocus.com/bid/102445Third Party Advisory, VDB Entry
- https://github.com/cisco/node-jose/blob/master/CHANGELOG.mdRelease Notes, Third Party Advisory
- https://github.com/zi0Black/POC-CVE-2018-0114Exploit, Third Party Advisory
- https://tools.cisco.com/security/center/viewAlert.x?alertId=56326Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/44324/Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/102445Third Party Advisory, VDB Entry
- https://github.com/cisco/node-jose/blob/master/CHANGELOG.mdRelease Notes, Third Party Advisory
- https://github.com/zi0Black/POC-CVE-2018-0114Exploit, Third Party Advisory
- https://tools.cisco.com/security/center/viewAlert.x?alertId=56326Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/44324/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.