Express Gateway through 1.16.11 contains a hardcoded cryptographic key vulnerability that allows attackers with datastore access to decrypt stored OAuth 2.0 token secrets via the default crypto.cipherKey 'sensitiveKey'. Attackers who can read Redis can decrypt tokenEncrypted values and combine them with stored token IDs to obtain valid bearer tokens for any user.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 5
https://github.com/ExpressGateway/express-gateway
disclosure@vulncheck.com
https://github.com/ExpressGateway/express-gateway/blob/45612814d12f65889ef3bdf8…
disclosure@vulncheck.com
https://github.com/ExpressGateway/express-gateway/blob/45612814d12f65889ef3bdf8…
disclosure@vulncheck.com
https://github.com/ExpressGateway/express-gateway/issues/1078
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/express-gateway-through-1.16.11-hardcoded-…
disclosure@vulncheck.com