Apache2 - Regression Update

apache2 Updated 02 Oct 2025

Summary

18/08/2015
N/A
Yes i
Unrated
Not published

DSA-3325-2: apache2 - regression update. Affects apache2 versions < 2.2.22-13+deb7u6. Fixed in 2.2.22-13+deb7u6. How to fix ↓

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Background

Apache2 is a widely used open-source web server software that provides a secure and efficient platform for serving web content. It is a critical component in many web hosting environments and powers a significant portion of websites on the internet. However, several vulnerabilities have been discovered in the Apache HTTPD server, which require immediate attention to ensure the security and integrity of web applications.

Vulnerability Detail

The first vulnerability, identified as CVE-2015-3183, allows for an HTTP request smuggling attack due to a bug in parsing chunked requests. This flaw could be exploited by a malicious client to manipulate the request length, potentially leading to cache poisoning or credential hijacking if an intermediary proxy is in use. The second vulnerability, CVE-2015-3185, is a design error in the ap_some_auth_required function, rendering the API unusable in Apache2 2.4.x. This could result in modules allowing access when they should not. The fix backports the new ap_some_authn_required API from version 2.4.16.

How To Fix

Minimum fixed version

2.2.22-13+deb7u6

This is the first release that contains the fix.

sudo apt-get install --only-upgrade apache2

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Workaround

There are no specific workarounds mentioned for these vulnerabilities. It is crucial to apply the recommended package upgrades to ensure the security of the Apache2 server.

Conclusion

It is highly recommended to upgrade the Apache2 package to the fixed versions mentioned above to address the identified vulnerabilities. Failure to do so may expose your web applications to potential attacks and compromise the security of your server. For further assistance and support in vulnerability remediation, please contact DevNack.com.

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FAQ

CVE-2015-3183 allows for an HTTP request smuggling attack, which can lead to cache poisoning or credential hijacking if an intermediary proxy is in use.

You can check the version of Apache2 by running the command 'apache2 -v' in the terminal.

No, CVE-2015-3185 only affects Apache2 2.4.x versions. The older versions are not impacted.

There are no known exploits for these vulnerabilities at the moment. However, it is crucial to apply the recommended fixes to mitigate any potential risks.

Yes, the updated Apache2 package allows for the configuration of custom Diffie-Hellman (DH) parameters.

Related vulnerabilities

Recent vulnerabilities recorded for apache2.

How To Fix

Minimum fixed version

2.2.22-13+deb7u6

This is the first release that contains the fix.

sudo apt-get install --only-upgrade apache2

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