SB2021052540 - Authentication bypass in Apache Pulsar
Published: May 25, 2021
Security Bulletin ID
SB2021052540
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Authentication (CVE-ID: CVE-2021-22160)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in when processing authentication requests based on JSON Web Tokens (JWT). The signature of the token is not validated if the algorithm of the presented token is set to "none". A remote attacker can bypass authentication process and connect under arbitrary account to the application, including administrative accounts.
Remediation
Install update from vendor's website.