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
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- cisco/node-jose
- Source
- psirt@cisco.com
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. Refreshed daily.