CVE-2020-15125 : What You Need to Know
Learn about CVE-2020-15125 where the Authorization header in auth0 npm package versions before 2.27.1 is not sanitized, potentially exposing bearer tokens. Find mitigation steps and impact details.
In auth0 (npm package) versions before 2.27.1, a DenyList of specific keys that should be sanitized from the request object contained in the error object is used. The key for Authorization header is not sanitized and in certain cases the Authorization header value can be logged exposing a bearer token. This vulnerability affects users of the auth0 npm package, specifically those using a Machine to Machine application authorized to use Auth0's management API.
Understanding CVE-2020-15125
This CVE highlights a security issue in the auth0 npm package that can lead to the exposure of sensitive information.
What is CVE-2020-15125?
CVE-2020-15125 refers to the failure to sanitize the Authorization header in the error object within versions of the auth0 npm package prior to 2.27.1.
The Impact of CVE-2020-15125
The vulnerability poses a high severity risk with a CVSS base score of 7.7, potentially leading to the exposure of sensitive data, particularly bearer tokens.
Technical Details of CVE-2020-15125
This section delves into the specific technical aspects of the vulnerability.
Vulnerability Description
The issue arises from the lack of sanitization of the Authorization header in the error object, allowing for potential exposure of bearer tokens.
Affected Systems and Versions
- Product: node-auth0
- Vendor: auth0
- Versions Affected: < 2.27.1
Exploitation Mechanism
The vulnerability can be exploited by accessing the error object containing the unsanitized Authorization header, leading to the exposure of bearer tokens.
Mitigation and Prevention
To address CVE-2020-15125, users should take immediate and long-term security measures.
Immediate Steps to Take
- Upgrade to version 2.27.1 or newer of the auth0 npm package.
- Monitor and restrict access to sensitive information that could be exposed.
Long-Term Security Practices
- Regularly update software dependencies to mitigate potential vulnerabilities.
- Implement secure coding practices to prevent similar issues in the future.
Patching and Updates
Ensure timely installation of patches and updates to maintain the security of the system.