Authorization bypass in express-jwt
CVE-2020-15084

7.7HIGH

Key Information:

Vendor

Auth0

Status
Express-jwt
Vendor
CVE Published:
30 June 2020

What is CVE-2020-15084?

In express-jwt (NPM package) up and including version 5.3.3, the algorithms entry to be specified in the configuration is not being enforced. When algorithms is not specified in the configuration, with the combination of jwks-rsa, it may lead to authorization bypass. You are affected by this vulnerability if all of the following conditions apply: - You are using express-jwt - You do not have algorithms configured in your express-jwt configuration. - You are using libraries such as jwks-rsa as the secret. You can fix this by specifying algorithms in the express-jwt configuration. See linked GHSA for example. This is also fixed in version 6.0.0.

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Deploy the Patch

Affected Version(s)

express-jwt <= 5.3.3

References

https://github.com/auth0/express-jwt/security/advisories/...
x_refsource_CONFIRM
https://github.com/auth0/express-jwt/commit/7ecab5f8f0cab...
x_refsource_MISC

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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