Tagged Questions

An attempt by a threat to exploit a weakness in a system.

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4
votes
2answers
530 views

An attack from my Employer

I am working in an ISP company as a junior support specialist. Recently, I have a serious suspicions that one of our "head" stuff member is compromising me by being able to control(see) my traffic.. ...
4
votes
4answers
332 views

Security risk of adding a HTTP Header with server identifier

We are about to deploy a web application to a web farm of quite a few web servers. During our testing we have found issues happening in one of the servers but not in others. Most of them because of ...
1
vote
2answers
719 views

Secure against HTTP FLOOD ATTACK

What is the best way to defend your web site against HTTP FLOOD POST/GET ATTACK ?
0
votes
1answer
146 views

What is the method used in the New York Times attack? [closed]

In the recent New York Times attacks, how did the attackers gain access to the server? Additionally, is there any evidence that these attacks were launched by China, aside from the proxy?
4
votes
4answers
406 views

Received a Kindle from a stranger, what are the risks?

While getting a coffee today, a man walked up to me and offered me a kindle. he said he no longer wanted it and that he was looking to give it away. An avid reader, I accepted. It has no accounts on ...
3
votes
2answers
864 views

How does the Yahoo webmail exploit work?

I got an email (referring to me by name) from somebody I knew a while ago and the email itself was just two/three lines containing a bit-ly link. Although it seemed like it actually could be ...
8
votes
2answers
3k views

How should one prepare himself for a job interview for penetration testing?

So, the title basically says it all. I would really like to hear out some of the more experienced friends here with their answers for this. Should it revolve around the ability to verbally explain ...
4
votes
5answers
276 views

Can SSL requests be proxied by issuing a second certificate?

Alice wants to login to her account at https://www.bobsbank.com/. However she clicks on a malicious link in an email and instead gets sent to the malicious site https://www.charliesbank.com/. The ...
2
votes
3answers
1k views

Disadvantages of HTTP GET/POST Flooding Attack?

I asked about What is HTTP GET/POST Flooding Attack? recently and I got a few detailed answers about what they are and how they work. Now I want to find out what are the disadvantages of them.
5
votes
3answers
14k views

What are HTTP GET/POST flood attacks?

I want to know what the main differences are between HTTP GET and POST flood attacks and mitigation strategies for both. I searched a lot but I really can't find some good articles nor examples about ...
2
votes
2answers
2k views

Difference between masquerading and replay attacks?

I know that masquerading is to impersonate a false identity and replaying is the same wherein unauthorized person uses the credentials of the authorized one to have the privileges.Then what is the ...
-1
votes
1answer
362 views

Why is it hard to catch cybercriminals? [duplicate]

Possible Duplicate: Why is it difficult to catch “Anonymous” or “Lulzsec” (groups)? I really want to know why the attackers behind the major attacks like Diginotar hack ...
5
votes
6answers
2k views

What does it actually mean when someone says their website is hacked?

I have seen many people say that their website has been hacked using some vulnerability. I never fully understood what this means. To me the only way to get control of website is get the FTP ...
0
votes
3answers
162 views

How to retrieve a site whose server is running Linux

I'm struggling to find a way to retrieve through Google a list of sites having Linux as their server operating system. Actually, I'd like to be able to test the following command: nmap -O ...
1
vote
1answer
117 views

How to know what's the type of an attack and from whom is sent?

I'm currently running a game server on a dedicated Windows 7 machine and it is being attacked. How do I know what kind of attack it is and from whom is sent? When he attacks, the RDP freezes and the ...
2
votes
2answers
327 views

DNS cache poisoning

What are the things the attacker needs to know from the victim to perform DNS cache poisoning ? for example : IP , Port number and Transaction number what else ?
2
votes
1answer
278 views

what is the difference between virus, worm, trojan and other malware [closed]

Looking through the questions in IT security, I found out that there is no answer which cover this question in depth. I am aware of the answer and just hope to see something detailed about: main ...
6
votes
1answer
864 views

What is the difference between Simple Power Analysis and Differential Power Analysis?

What is the difference between Simple Power Analysis (SPA) and Differential Power Analysis (DPA) and why is it not possible to do an SPA attack on FPGAs? My basic understanding is they are ...
16
votes
5answers
1k views

Rainbow table concept for Prime numbers

Is there a concept where pre-computed tables can be used for prime number factorization ? Is it possible that a computer can generate millions of prime numbers, store it and then effectively determine ...
2
votes
1answer
258 views

White-Box Cryptography Questions and References

I have recently started reading about White-Box Cryptography and looking at references/papers/web sites. A have a few questions I was hoping to get guidance on. As far as I can tell, WBC has ...
1
vote
1answer
484 views

Are there any test cases to ensure the “web-attacks.rules” snort file works correctly?

I have set up an free evaluation Confluence Server on my local host and have configured "snort.conf" to point to my localhost as "HOME_NET" environment variable. I tried to test the ICMP rule by ...
4
votes
3answers
1k views

Create a page to experiment with SQL injection [closed]

This semester, I have taken a course on Information Security and my project for this course is to implement an SQL injection to obtain admin privileges. For this I first download Havij software ...
2
votes
1answer
295 views

solaris equivalent of /proc/self/environ LFI

I need to exploit a Solaris vulnerability for class, but we never dealt with Solaris before and I never installed it. Does Solaris have an equivalent to Linux's /proc/self/environ, exposing a ...
5
votes
3answers
3k views

What is a Shrink Wrap code attack?

On my C|EH course I have heard about term "Shrink Wrap Code Attack", but we've only mentioned it. Now trying to do some research and refresh the topics, I can't seem to find serious description of ...
1
vote
1answer
209 views

uninstall and reinstall after hacking [closed]

My computer has been hacked. If I uninstall and reinstall do I loose my files? The facebook tech tried to sell me a number of pkgs ranged $149-$299 and told me that my account was hacked as was my ...
3
votes
3answers
372 views

Is this a web attack I should be concerned about - trying to enter code for form vars

I have a created a simple CGI script running on a web server where a user can login using a username and password. The username and password are entered via a html form and the form POST's the data ...
8
votes
2answers
10k views

Advice on what to do after being hacked?

After running a system scan earlier today, I found that my computer had been infected by a trojan horse. My reason for running the scan was because Windows kept shutting down and then recovering. ...
8
votes
3answers
2k views

Can you extract memory contents from a hibernated Windows machine?

In a recent discussion about hardware hacks, attacks surrounding Windows hibernate popped up. I am not entirely convinced that it would be viable to get stuff out of the memory saved to disk. When ...
19
votes
2answers
3k views

How can vending machines be hacked? And how can I prevent it?

I am developing a vending machine and want to make it secure. In a comment to my previous question, @Polynomial said "Vending machines (and similar devices) can often be pwned via buffer overflows on ...
7
votes
3answers
6k views

What type of attacks can be used vs MongoDB?

I'm starting to learn MongoDB and was curious if it was susceptible to some type of injection attack similar to SQLi. Due to the nature of the DB, I don't think you can inject into it but... What ...
2
votes
2answers
362 views

Attacks surrounding /etc/hosts/

Although /etc/hosts/ is a file that comes up a lot in security, I am surprised to find there is no discussion here on this forum that describes how this can be used for an attack. Thinking about it, ...
5
votes
1answer
319 views

Cufon or Prototype as an attack vector for Blackhole exploit kit?

I've been asked to look into the security of a client site that's apparently throwing antiviral messages when visited. Specifics: It's being detected as a Blackhole exploit kit inside of a Cufon ...
1
vote
1answer
669 views

Different Security Issues Depending on OS? [closed]

I'm interested in learning more about OS specific security issues if there are any. I'm very new to this topic but I want to learn more about if there are specific security vulnerabilities associated ...
9
votes
3answers
2k views

Example of a backdoor submitted to an open source project?

To clarify immediately, I'm not interested in writing a backdoor. I have no interest in submitting backdoor changelists to projects myself. I'm researching some source modeling techniques, and we're ...
8
votes
4answers
1k views

Keyboard sniffing through audio recorded typing patterns

I've been thinking about this for a while; I know people are aware of wireless wiretapping of keyboards. However, has there been research on how to wiretap keyboards based on typing patterns? I'm ...
10
votes
2answers
739 views

In the recent DKIM vulnerability, how did someone determine key length by looking at headers?

Having read this recent article : Wired-DKIM vulnerability, I have a couple of questions. How can one determine the key length that is being used simply by looking at the headers ? And I'm assuming ...
2
votes
1answer
202 views

amd64 safer than 686-pae?

Apart from stronger ALSR entropy... Is a system using amd64 any safer than 686-pae? What are the advantages, if any?
11
votes
5answers
3k views

What is a DoS Attack and how does it differ from a DDoS attack?

Can some one explain to me the concept of Dos Attacks for web applications ? Also what is the distinction between Dos and Distributed Dos ( ie DDos) attacks ? Wikipedia says : In computing, a ...
20
votes
2answers
12k views

How to exploit HTTP Methods

Many security scanners like nikto, nessus, nmap, and w3af sometimes show that certain HTTP Methods like HEAD, GET, POST, PUT, DELETE, TRACE, OPTIONS, CONNECT, etc are vulnerable to attack. What do ...
2
votes
2answers
302 views

Can an attacker slow down my server without compromising it?

We have a Linux server with WHM/cPanel which has been running without problems for almost 3 years now. Yesterday, the server became unresponsive (it was definitely there though) for around an hour. ...
3
votes
4answers
3k views

Is there a method to detect an active man-in-the-middle?

Suposing an attacker that has gained access to the router. Is there a way, for the victim, to notice that is being attacked? I think one of my friends is a victim of this kind of attack. How can I be ...
1
vote
1answer
339 views

Determining the target address in a heap overflow

For a heap overflow to occur and arbitrary code to be executed, the function free() performs the step : hdr->next->next->prev = hdr->next->prev I understand that the address of ...
3
votes
1answer
344 views

Can JavaScript defeat source port randomization?

Can malicious JavaScript defeat source-port randomization in browsers? I am reading a research paper which seems to claim that the answer is yes: many browsers seem to always assign a random ...
3
votes
1answer
144 views

Vulnerabilities of having one path of app accessible only via HTTPS but others via HTTP?

Imagine example.com that is accessible via HTTP and HTTPS. Most of content at site isn't secure and it won't be bad if it will be read by attacker. One of paths - example.com/secure_zone is accessible ...
2
votes
1answer
261 views

Is it safe to invoke PHP GD functions if you don't know whether file is a valid image?

There is image upload function in web application. After image is uploaded, it's resized using functions from PHP GD like imagecopyresampled and others. Before invocation of PHP GD's functions there ...
4
votes
1answer
162 views

Computational Feasibility of finding 'Good Links' of the following format

I recently stumbled upon this and am checking here to see if what I am proposing is indeed feasible and can be considered a breach of privacy. For obvious reasons I am not revealing the website ...
2
votes
5answers
5k views

Efficient way for finding XSS vulnerabilities?

Manual (reliable) way: Put string containing characters that have special meaning in HTML into some parameter of HTTP request, look for this string in HTTP response (and possibly) in other places ...
5
votes
2answers
945 views

Memory Dumping - Cause for concern in Virtualization?

Recently, I started exploring threats to Virtual machines in general. The first question that popped into my head was whether a host machine can dump its entire memory onto a file, and inspect the ...
8
votes
2answers
264 views

How to mitigate the risk of a continuous integration service security breach?

We are using a Continuous Integration service to automatically run our product test suite. Every time we push code to our central Git repository production branch, the CI services is notified and ...
13
votes
1answer
6k views

Are SSL encrypted requests vulnerable to Replay Attacks?

Are SSL encrypted requests vulnerable to Replay Attacks? If so, what are good options to prevent this?