CVE-2018-0114CWE-347

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…

published January 4, 2018

CVSS
—
EPSS
43%
Percentile
98.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.42651 · 98.7th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2018-01-04T06:00Z
EPSS history
Timeline
  • 04 JAN 06:00Z
    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…
    cvelistv5