An attempt to exploit a weakness in a system, either for nefarious or research reasons. Questions with this tag should be about designing, carrying out, or defending against the attack itself, rather than about the underlying weakness.

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I ran a netstat on my server and port 80 is listening, does that mean it is open and vulnerable to attacks? [closed]

Sorry I am just getting into Web Development and trying to learn more about servers and PHP, so I downloaded the LAMP stack on an Ubuntu14 OS and started an apache2 server. tcp6 0 0 :::80 ...
2
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2answers
257 views

Why would Tor not be vulnerable to this easy-sounding attack?

I'm thinking of this attack on Tor, which I'm sure won't work, as it is much too simple. Mr. Blackhat sets up lots of intermediate nodes. However, whenever TCP connections come in, they are given ...
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5answers
412 views

Methods used to reverse a hash

I know that a hash is a one-way-function and that therefore there isn't a reversal function. By reversing a hash I just mean to find some plaintext that gives the hash. I think that I understand that ...
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3answers
2k 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.
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3answers
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How to prevent attacks to server

I have 3 CentOS server configured for my applications. Recently I recognized that there is so many attacks to my servers. I have so many logs about attempt to login to my servers using sshd from ...
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5answers
733 views

Is it possible for an attacker to change my sent emails content before arrival?

I have a web application that sends "change password link" to user that wants to changhe his password. The link is something like this: http:// www.my-domain.com/changepass?uid=username&...
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2answers
208 views

How secure are the GPG/PGP keyservers?

Importing a GPG key with a KeyID or fingerprint seems to rely on keyservers. Doesn't this invite man-in-the-middle attacks, in which someone would alter the keys to allow them to decrypt the data? ...
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2answers
199 views

What are stolen passwords used for?

Say there is a line of business application which has username/password datatable in the DB. Personal email address is not stored, and usernames are assigned by an administrator. Someone gains access ...
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2answers
1k views

Some questions about penetration testing distribution Backtrack 5

I know just the basics of backtrack and I want to ask some questions about it: Can you attack an ftp server using backtrack? an email server? I have a Centos virtual private server and backtrack is ...
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2answers
85 views

Are documented networks easier to attack? Are undocumented networks easier to protect?

I am learning about network documentation for the first time and have come across the following statement: Undocumented networks might not be protected and can be used to support insider attacks. ...
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2answers
7k views

Break in attempts from secureserver.net

Over the last few weeks I have seen dozens if not hundreds of break-in attempts from ip addresses which map back to secureserver.net. I know these are GoDaddy machines from the who is look up. ...
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1answer
279 views

Is my ISP hacking me? [closed]

Today I was trying to enter my routers admin page. I put the default IP address starting with 192.168. I couldn't login so ran ipconfig, and I discovered that I was assigned a Class A address. I was ...
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3answers
749 views

Insert string to memory with null character

I'm trying to implement return-to-libc, here's the code void func(const char *str) { char buf[4]; strcpy(buf,str); printf("you entered [%s]\n",buf); } int main(int argc, char *argv[]) { ...
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1answer
531 views

Can malicious phone software mount a MITM attack on a phone call?

Suppose my smartphone has been compromised and there is malicious software running on it. You can assume that the malicious software has broken out of any sandboxes and is running as root. If I'm on ...
2
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1answer
1k views

How does Binding Images with Malicious Patches happen?

Well I don't know if this technique is still used, but about 5-7 years ago it was a popular way to deliver a malicious patch (Sub-7 , bifrost etc ..) to a victim. There used to be a program that ...
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2answers
896 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, ...
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2answers
61 views

What can a user do in order to protect against CSRF attacks?

If I'm browsing while I'm logged in into my hosting panel or router or any other application, there is a chance of being hacked by a CSRF exploit. So, the question here is about user or client-side ...
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3answers
73 views

Should it considered a risk if an organization's server OS and version information is leaked? [duplicate]

I am assuming that it should be considered a risk because there may be several security issues of various OSes known to hackers. If a hacker gets access into the victim's network, the extra knowledge ...
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1answer
58 views

Is a 'remote' cookie replay attack possible?

Once a cookie is stolen from the session of a legitimate user, can I perform a 'remote' cookie replay attack on that user? I am successfully able to perform a cookie replay attack on the same system, ...
2
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1answer
153 views

Can TLS fallback work with server side support only?

I have patched my server with OpenSSL 1.0.1j for the Poodle vulnerability. Been reading the spec on TLS_FALLBACK_SCSV. From what I can tell in order for TLS fallback prevention to work properly it ...
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2answers
2k views

How effective have statistical methods been at breaking encryption?

If we look at how statistical engines run on-line translators, and how they are built, we see that they look at a new language and run a statistical model over it searching for what's probably the ...
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1answer
388 views

The impact of the Sony attacks on the security industry [closed]

First of all there was the PSN hack, which was compromised due to a vulnerable version of Apache and no Firewall and using a developer console. Then Sony Greece fell due to an SQL Injection attack. ...
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2answers
329 views

What steps can I take to identify what type of compromise of my computer has occured

I got involved in a strange scenario today :-) . Some 'UDPAgent.exe' file/worm/virus was trying to access my collegue's system and the antivirum program was showing that this particular thing is ...
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1answer
76 views

Defeating code injection attacks in x86

In x86 systems, there are three requirements for a code injection attack to work: write attack payload to memory attack payload to be executable divert control-flow to payload How can we prevent 2)...
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3answers
187 views

Feasibility of time-based database brute-force attacks on websites

I recently learned that there is an attack that utilizes the fact that when brute-forcing a compared string (e.g. hash from a password or token) in a database the query fails a few nanoseconds earlier ...
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1answer
86 views

Who first introduced the notion of attack graphs?

I've been searching the literature and haven't been able to pin it down. The concept probably existed long before the name was coined, but who is the invention/introduction of attack graphs attributed ...
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2answers
5k views

How to exploit Open Redirect Vulnerability?

Redirect/Forward attack code: <?php $redirectUrl = $_GET['url']; header("Location: $redirectUrl"); ?> exploit (Sends user from your page to evil page) : example.com/?url=example.com/faq.php ...
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4answers
172 views

Is it possible to communicate securely entirely over the internet given a global, resourceful man in the middle?

Assuming a global, resourceful man in the middle, is it possible to Securely communicate (I don't mean storing encrypted data off site) completely establishing and sending messages over the internet ...
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3answers
5k views

How to search for evidence of Camfecting (webcam hacking)?

I'm worried about camfecting (webcam hacking). The camera light on my mac (running OSX) is not on, but it isn't hard wired so that doesn't say a lot. I've ran a virus scan but no signs. Now my idea ...
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2answers
664 views

How to get URL behind REST-style

I've asked same question on StackOverflow but topic passed away with no answers except few comments so I'll try to ask the same question here as it's probably more specific to security. The only (...
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3answers
3k views

MITM: tools for intercepting and modifying traffic?

I want to carry out a MITM attack to modify traffic, so I can strip out/modify things in the request. For example: When I receive a request on port 25, I want to be able to intercept all the requests,...
2
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1answer
6k views

In Metasploit, how to use a custom exe as payload?

Question was once on a mailing list but wasn't answered. I want to use a custom exe as a payload in metasploit. For example when I use exploit/multi/browser/java_atomicreferencearray and want to ...
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2answers
621 views

Sun ILOM / Out of band management security concerns

I would like to get some outside opinion on this if possible, although I do not know what to ask. Sun ILOM is an Out-of-band management system. I understand it is a separate OS on the box that is ...
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2answers
876 views

nmap detects opened port but can't connect with telnet

I've made an scan to one single IP with nmap and it reports that the port 65301 is opened, and even it detects that it's maybe the service pcanywhere. sudo nmap -p 65000-65535 -sV x.x.x.x Starting ...
2
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1answer
72 views

DNS Rebinding attack - does this attack require victim to use an attacker's DNS server for resolution? How will that happen?

Usually a preferred DNS server will be set in router's configuration and it will be either the organization's server or some trusted public server. So how would attacker get the victim to use his DNS ...
2
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1answer
168 views

Prevent cold boot attack on running laptop by overwriting ram [closed]

I'd like to use my laptop as a recording device when I leave home, but there would still be the possibility for a cold boot attack or with DDR3 RAM even warm boot attack is possible as I have read. ...
2
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2answers
280 views

How can an attacker access a system with a private IP address? [closed]

I am confused about this concept if a public IP is assigned to my router and my system has private IP address, how an attacker can access my system or can use my system as a BOT. Its a common scenario ...
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3answers
157 views

Security coding training best approach

To train the development team, there are various options one can take: inhouse presentation with code samples, CBTs so developers do it at their best time, instructor-led courses onsite or inhouse (...
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1answer
188 views

Are there theoretical attacks against ECC Digital Signatures?

I was asked to do a research about attacks on various digital signature schemes. There is one thing that bothers me for which I could not find a direct answer. For digital signatures that are based ...
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2answers
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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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2answers
646 views

Someone logged on my Centos VM; Can they attack the host OS?

I'm using Windows 7 and decided to learn Linux Administration (Centos 6.4) using Oracle VirtualBox to host the Linux system. In my network configuration I choose "Bridged Adapter". I set the VM's IP ...
2
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1answer
743 views

How to jam wireless AP?

The first comment under this question states: There are "smart jammer" techniques that are designed to mess with the protocol operations, not overwhelm the receiver with noise (e.g., for 802.11, ...
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1answer
176 views

What other place (besides libc) attacker redirect control flow to after an attack such as buffer-overflow succeeded

I am not sure this is a right place to ask this question or not. I want to know in previous or modern type of buffer overflow attack, when the attacker succeeded to overwrite return address, where ...
2
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1answer
379 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 ...
2
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1answer
440 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 ...
2
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1answer
272 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?
2
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1answer
969 views

Example of attack trees in the web application security analysis

Here I am again asking for some informations about attack trees usage in web application analysis. For my master thesis I decided to study the usage of this formalism in order to reppresent attacks ...
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3answers
135 views

I want to implement a new type of security feature over several platforms

I want to make a security feature that will go farther in discouraging people from looking through a secure system or server than what I have seen being implemented. Specifically, is there a way (or ...
2
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1answer
3k views

How can log poisoning be successful with a Local File Inclusion attack?

I just read a paper about Local File Inclusion on exploit-db.com, it can be found here. One technique with LFI is log poisoning as you may know already. You do an HTTP GET request that contains PHP ...
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2answers
2k views

Microsoft ASMX Web Services Test form available on remote machines

I have been doing some research about Web Services security. I noticed that some sites are using Ajax and JQuery to consume ASMX WebServices. I navigated to the Web Service EndPoint and I realized ...