SB2025040127 - Ubuntu update for nginx 

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2025040127

SB2025040127 - Ubuntu update for nginx

Published: April 1, 2025

Security Bulletin ID SB2025040127
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Improper authentication (CVE-ID: CVE-2025-23419)

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an TLS session resumption when handling client certificate authentication. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Successful exploitation of the vulnerability requires that name-based virtual hosts are configured to share the same IP address and port combination and have TLS 1.3 and OpenSSL. This vulnerability arises when TLS session tickets are used and/or the SSL session cache is used in the default virtual server and the default virtual server is performing client certificate authentication.


Remediation

Install update from vendor's website.

References