SB2019042502 - Ubuntu update for FreeRADIUS
Published: April 25, 2019 Updated: April 26, 2019
Security Bulletin ID
SB2019042502
Severity
Medium
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Improper Authentication (CVE-ID: CVE-2019-11234)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error related to processing authentication tokens. A remote attacker can execute a reflection attack and bypass authentication process.
This vulnerability was dubbed "Dragonblood".
2) Improper Authentication (CVE-ID: CVE-2019-11235)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to FreeRadius mishandles secure checks when preforming user authentication process. The related checks refer to mechanisms, which ensures that "each participant verifies that the received scalar is within a range, and that the received group element is a valid point on the curve being used". A remote attacker can bypass authentication process.Remediation
Install update from vendor's website.