CVE-2011-5063: Improper Authentication in Apache Tomcat

org.apache.tomcat:tomcat Updated 02 Oct 2025

Summary

14/05/2022
Yes i
Moderate
Not published

CVE-2011-5063: Improper Authentication in Apache Tomcat. Affects org.apache.tomcat:tomcat across 3 version ranges.

>= 5.5.0, < 5.5.34 >= 6.0.0, < 6.0.33 >= 7.0.0, < 7.0.12

Fixed in 5.5.34, 6.0.33 or 7.0.12, depending on the release line you run. How to fix ↓

Free scan

Check if this vulnerability affects your application

Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats
SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml
Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile
Javascript package-lock.json · yarn.lock · pnpm-lock.yaml
PHP composer.lock
Python poetry.lock · requirements.txt · Pipfile.lock
Go go.mod
Rust Cargo.lock
Ruby Gemfile.lock
Dart pubspec.lock
C/C++ conan.lock
Elixir mix.lock
Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Sponsored Devnack Penetration testing for web, API and mobile Manual testing by engineers who build software, not an auditor's checklist. Trusted by teams at Swift and Google Talk to Devnack

Background

Apache Tomcat is an open-source web server and servlet container that is used to deploy Java-based web applications. It provides a Java Servlet and JavaServer Pages (JSP) environment for running web applications. The HTTP Digest Access Authentication implementation in Apache Tomcat versions 5.5.x before 5.5.34, 6.x before 6.0.33, and 7.x before 7.0.12 is vulnerable to an improper authentication issue. This vulnerability allows remote attackers to bypass intended access restrictions by leveraging the availability of a protection space with weaker authentication or authorization requirements.

Vulnerability Detail

The vulnerability in Apache Tomcat arises from the HTTP Digest Access Authentication implementation. The affected versions of Apache Tomcat do not properly check realm values, which can be exploited by remote attackers. By leveraging the availability of a protection space with weaker authentication or authorization requirements, attackers can bypass intended access restrictions. This vulnerability is different from CVE-2011-1184. The impact of this vulnerability can lead to unauthorized access to sensitive resources and potential data breaches.

How To Fix

Fixed versions by release line

The minimum fixed version depends on the release line you run.

  • >= 5.5.0, < 5.5.34 5.5.34
  • >= 6.0.0, < 6.0.33 6.0.33
  • >= 7.0.0, < 7.0.12 7.0.12

Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →

Workaround

There is no known workaround for this vulnerability. It is recommended to apply the fix by upgrading to a fixed version of Apache Tomcat.

Conclusion

The improper authentication vulnerability in Apache Tomcat can be mitigated by upgrading to a fixed version of the software. It is important to promptly apply the recommended fix to prevent potential unauthorized access and data breaches. For further support and assistance in vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for org.apache.tomcat:tomcat →

Share this vulnerability

FAQ

Apache Tomcat is an open-source web server and servlet container that is used to deploy Java-based web applications.

This vulnerability allows remote attackers to bypass intended access restrictions, potentially leading to unauthorized access to sensitive resources and data breaches.

To fix this vulnerability, it is recommended to upgrade to a fixed version of Apache Tomcat.

There is no known workaround for this vulnerability. It is recommended to apply the fix by upgrading to a fixed version of Apache Tomcat.

Yes, this vulnerability is different from CVE-2011-1184.

Related vulnerabilities

Recent vulnerabilities recorded for org.apache.tomcat:tomcat.

How To Fix

Fixed versions by release line

The minimum fixed version depends on the release line you run.

  • >= 5.5.0, < 5.5.34 5.5.34
  • >= 6.0.0, < 6.0.33 6.0.33
  • >= 7.0.0, < 7.0.12 7.0.12

Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →

Subscribe to Vulert on Telegram
Daily digest of new CVEs, critical and high severity, affected packages and fixes — plus a weekly roundup.
Join the channel →
Help improve this record
Report an issue or send feedback