Questions about the security of Apache open source software, especially Apache HTTP Server

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180 views

Why are OSX users of my TLS-only site being asked to supply a client certificate?

I purchased a Comodo SSL certificate (OV), and set up the Apache vhost config so that all traffic is forwarded to 443. Intermittently some users are being prompted to supply a client certificate; ...
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1answer
263 views

Exclude file names from mod_security patterns

I have a question regarding mod_security. I have installed mod_security on my server and OWASP core rule set. However, now people are having trouble when accessing my page. For example, one problem ...
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1answer
334 views

Checking if Mod_Rewrite is Enabled Remotely

When pentesting it is useful to know when apache mod_rewrite is enabled. But when one comes across a web server that does not utilize PHP it is difficult to tell if mod_rewrite is enabled considering ...
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1answer
135 views

Strange bug in ModSecurity with the rule 950901

I have a classic ModSecurity configuration (apt-get...) SecRuleEngine Off SecPcreMatchLimit 1000 SecPcreMatchLimitRecursion 1000 SecAction "phase:1,t:none,nolog,pass, \ ...
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1answer
91 views

Strange logs in apache from bing/facebook

I am used to finding some random probing from script bots in my apache log files, but today I found some strange entries: 65.55.24.247 - - [25/Apr/2014:01:52:36 +0000] "GET ...
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1answer
256 views

VPN Client - Addtional Security Layer or a Useless Feature

I have a corporate web portal which is used for staff collaboration including a web-based mail interface connected to MySQL Database, corporate calendar, file storage, customer contacts data with ...
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35 views

How to manage security for multiple PC and VM?

I have a firewall VM which creates I have used to setup subnet for different purposes. For example: (fake ips, of course) 1.1.2.1/24 DMZ 1.1.3.1/24 Internal 1.1.5.1/24 security/logging I use ...
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194 views

Nessus scanner and Red Hat backport security updates

I have asked this question: False positive Apache version in scanner results on Centos I need additional clarification: Do you know if it is possible to configure Nessus to adopt Red Hat backport ...
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1answer
82 views

How to Minimize Apache Loadable Modules (serving MediaWiki)

According to Guide to the Secure Configuration of Red Hat Enterprise Linux 6, there is this policy: "In certain scenarios, it is beneficial to remove certain httpd modules to limit the functionality ...
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194 views

How Do I Secure Apache Web Server [duplicate]

Possible Duplicate: Apache Server Hardening I'm going to make a web server on Apache 2. What are the security issue I will be looking at? And how do I secure it? I have been reading news ...
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2answers
711 views

Weird IP addresses showing up on my server

I have a personal server located in the US, I use it to execute code which requires a lot of resources. I sometimes have apache running on my server, to test php code. I recently left my apache server ...
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2answers
888 views

Running Apache as system service on Windows 2003 R2 64-bit

Trying to make my point, that running Apache with PHP5 module as Windows service is not secure. All I got to prove it - FTP access to some internal website. So what I did - I uploaded file test.php ...
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2answers
68 views

How to prevent Cookie-Bombs?

Egor Homakov made a nice writeup (Cookie Bomb or let's break the Internet) on how to crash CDNs and other websites with cookies. Although this is a user/browser-side DOS, I'm wondering how one would ...
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3answers
2k views

How to filter POST requests before they reach PHP on Apache?

I have done URL filtering with .htaccess (using learning and generator), however I am still concerned that any POST request can be submitted to the PHP even there is only one POST form on the website, ...
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2answers
168 views

Clarifying MITM attacks and Digital Certificate requirement

We are running a Portal application for our client with Payment Gateway integrated. Payment gateway uses SSL as it is suppose to be . The concern for me is that our Portal application does not use ...
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1answer
75 views

Dangers of PHP uploading word docs into a quarantine

I plan to write a PHP script which will allow web users to upload MS Word formatted docs. Here are the precautions I am taking: Filenames will be created by me (something like YYYY-MM-DD.doc) Files ...
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3answers
85 views

Prevent a server side script from a direct URL access

There is a server side script written in php(say backend_file.php) or coldfusion(say backend_file.cfm). Lets say, i am using Apache and I have a sample web folder (on my Localhost) like: ...
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2answers
334 views

Was I a victim of an “Apache PHP Remote Exploit” attack?

I have a server in my computer for testing purposes, accessible from the outside. I was reviewing the access.log file, and I saw 89.187.33.50 - - [29/Mar/2014:03:39:01 +0100] "HEAD / HTTP/1.0" 200 - ...
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1answer
205 views

501 Not Implemented ServerInfo.jsp

I looked at my logs from amazon ec2 instance and found the following lines: 94.177.121.102 - - [29/Mar/2014:08:50:52 +0000] "XGET /web-console/ServerInfo.jsp HTTP/1.0" 501 418 "-" "-" 94.177.121.102 ...
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1answer
161 views

Lots of bot hits, referer seems to be the variable

I've recently (over the last 15 minutes) had quite a few hits from the same IP, it's in a country on our blacklist so they just up up on our "Access Denied" page, but I was just interested in what ...
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1answer
1k views

“Must have” and “Preferred Cipher” suites terminology

I have received the following advise to set cipher suites to suitably mitigate Beast attack on a newly setup Apache HTTPD server. Preferred ciphers: RC4-SHA, RC4-MD5 Must Have Ciphers: ...
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3answers
819 views

How to find vulnerable sites on a web server

A client of mine has a managed VPS with dozens of websites on it, maybe even hundreds. Now his server keeps getting infected on a regular basis. The webhost / server admins keep digging in the dark. ...
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2answers
279 views

How to protect files (cron files) frome being executed by everyone?

I wonder what read / write permissions should I set on my cron files (php files) so they can be executed only by our server. We're using CentOS 5.9 - 64bit and cPanel / WHM + Apache. Thanks!
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2answers
313 views

Is there an easy way to secure Apache on debian?

I run an Apache webserver with lots of PHP-sites of several customers. I tried install apache-mod_security2 after this (german) tutorial that is using these rulesets: ...
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1answer
58 views

Apache Server Maintains HTTPS Connection To Mysterious Server (Hijacking?)

I've been on a shared webhosting plan for 10 years and I recently moved all of my sites (various WordPress sites and associated plugins, all in PHP, a MediaWiki site, and a lot of static stuff) to my ...
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2answers
68 views

Securing apache by IP with .htaccess

I have a folder that I don't want to be accessible from outside my network's LAN. It seems like all traffic from the outside world goes through my firewall (192.168.1.39). So I made my .htaccess as ...
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2answers
49 views

how to block ip from head or ping or get or post to webserver (using apache and windows)?

am using apache 2.4.9 latest with windows 7 i am using some modules like limitipconn_module security2_module but using wireshark i get unlimited request to busy my webserver (DOS) from some ip ...
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1answer
54 views

Apache redirecting to unsecure port

I have setup a test website in order to play around setting up SSL. The website is setup on a Windows host with Apache 2.2.20 with OpenSSL 0.9.8r, MySQL 5.5.37, PHP 5.3.28. The URL to the home page ...
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1answer
44 views

Are there any exploits in Movable Type that allow the attacker to delete the movable type files?

I'm a developer for a web site; we have a small blog powered by Movable Type that we added a few years ago. The blog doesn't get a lot of traffic or attention; we just noticed a couple of days ago ...
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1answer
636 views

Apache 2.2 mod_ssl configuration Forward Secrecy/BREACH/BEAST/CRIME

I am looking for mod_ssl configuration which protects against common attacks like Breach, Beast and Crime. I already disabled gzip to avoid Crime but I'm unsure about the others. RC4 should only be ...
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2answers
158 views

Does the Heartbleed vulnerability affect signed java applets [closed]

I have a Windows based server that serves a signed JAVA applet. The website isn't secured (HTTP), but all JAVA applets have to be signed now, so the site serves a signed JAVA applet as part of a web ...
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1answer
51 views

Security implications of putting virtual hosts source code in /var/www/[domain]

A friend pointed out that putting virtual hosts as sub folders of the default /var/www was a bad idea. (linux example path; this applies to all OS) I see that it's possible to reach the virtual hosts ...
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1answer
187 views

How does a website get pass my server firewall and attempt to hotlink to my server resources?

I was stumped when I saw the following lines on my Apache server error log this morning: [authz_core:error] [client ::1:37317] AH01630: client denied by server configuration: ...
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1answer
200 views

Installed new Wildcard certificates on my server, but still appear as expired on browser [closed]

I have bought new WILDCARD certificates (*.mydomain.com) for my servers. I was able to install successfully on one server. So, I know the files are correct and I was able to verify their validity. ...
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2answers
112 views

Force https, complex implementation

I have a website running on a dedicated server (single IP) on apache. Multiple domains are pointed to the website . For ex: sub.abc.com, sub.bcdaf.com I have now purchased a single SSL certificate ...
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3answers
5k views

How force that all connections to my Apache use TLSv1.1 or TLSv1.2?

I tested on Ubuntu 12.04 (apache 2.2.22-1ubuntu1.4 and openssl 1.0.1-4ubuntu5.10) and Ubuntu 13.04 (apache 2.2.22-6ubuntu5.1 and openssl 1.0.1c-4ubuntu8.1). here explain how to do so, but I have the ...
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1answer
140 views

Abusing write permission on Apache logs dir to escalete privileges

I have just come across this sentence on apache log files documentation: Anyone who can write to the directory where Apache is writing a log file can almost certainly gain access to the uid that ...
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2answers
146 views

My Apache log is kind of freaking me out [closed]

So, last night I looked at the Apache log of my shared hosting account for the first time. There was quite a lot of traffic that looked suspicious, specifically a lot of GET request from a domain, ...
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3answers
1k views

Security checklist for hosting a website on dedicated server - Linux [closed]

I have been searching for a while now. But i can't find a start-up and advanced sought-of checklist to understand the most important things to consider while going for dedicated hosting server for a ...
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1answer
222 views

What are the consequences of turning on Apache AllowEncodedSlashes?

What are the consequences of turning on Apache AllowEncodedSlashes? I want to turn it on and I want to know if this any worse than any of the other kinds of injection attacks that may occur in web ...
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1answer
111 views

How bad of a practice is it to mount tomcat's manager to Apache2?

If we take into account only security concerns, how bad of a practice is it to mount tomcat's manager to Apache2. E.g.,: JkMount /manager/html* ajp13_worker I'm doing this because my company has ...
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1answer
566 views

Mod_security rules-updater.pl fails to pull new release

Mod_security has a rules updater distributed with their release packages on sourceforge: http://sourceforge.net/projects/mod-security/files/modsecurity-crs/0-CURRENT/ Usually, you can run the script ...
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23 views

Which OWASP modsecurity crs version to install on apache 2.2.22

Hello I am considering installing owasp mod_security crs on an ubuntu 12.04.4 which comes with apache 2.2.22. On the github page I have seen many version's but all tutorials were using 2.2.7 First I ...
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33 views

Current State of BREACH (GZIP SSL Attack)?

It has been one year since BREACH made our way into our hearts, and there does not seem to be any articles or posts or patches since then, is my Google-fu weakening? Has BREACH been mitigated or ...
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21 views

Mysql Virtual IP and timeout

What are the risk that I encounter when increasing the timeout of a vip between a web server (apache) and mysql cluster (two servers). Actually it is set to 5 minutes. If time_out was 1hour, knowing ...
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32 views

trackback spotted in multple http errors

[Sun May 11 12:24:46 2014] [error] [client private ip] [X_FORWARDED_FOR 27.159.207.165] Path not found: /contact_us_public.php/trackback/, referer: http://www.mydomain.net/contact_us_public.php Does ...
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1answer
92 views

ssl client authentication: check only one certificate VS certs signed from a ca

i'm about to secure a webservice with client authentication. (apache2, mod_ssl, openssl). from what i googled, i found that it's more common to have a ca, which signs the client certs, which will ...
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19 views

Someone is making this request to the php cgi on by apache2 server, what does it mean do? [duplicate]

These are the query parameters the hacker is trying to POST: ...
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4answers
204 views

Strange activity on Apache httpd access log [duplicate]

I have set up an Apache/2.2.22 (Debian) Server on my Rasberry Pi. Looking at my access.log, I see a bit of strange activity consisting mostly of GETs, which is quite disconcerting as I am a complete ...
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1answer
582 views

WSO 2.5 Found on Apache

I have found on my web server the file wp-conf.php which when you call it from the browser with a url parameter like wp-conf.php?t7831n=any value shows an interface where you can control the entire ...