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

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2
votes
1answer
145 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 ...
11
votes
1answer
377 views

How can an attacker abuse a distributed system?

How can an attacker take advantage of a world where state is eventually consistent and vector clocks are used to settle disagreements? For example, what are the security concerns of using a database ...
3
votes
4answers
689 views

does switching to linux remove existing computer virus

if you change from a malware/spyware infected windows setup to a linux setup will infections migrate to linux if they were on the computer? (when you are hacked/infected is it the op system that is ...
4
votes
1answer
117 views

Security consequence of Javascript hole in an online chat?

For an online chat that allows basic HTML, what happens if they leave an open way for a potential hacker to execute javascript on everyone who is in the chat? What is the worst thing they could do?
-1
votes
2answers
192 views

How do you search for new vulnerabilities? [closed]

I've been asked this question, and I really don't know how would I do it. My answer was to take known vulnerabilities and try to exploit them on a different way, but this is not really a new ...
5
votes
3answers
364 views

How I can prove that SSH attacks are not from my application?

My ruby on rails web application is hosted on Linode. Linode opened a ticket and blamed my Linode server for attacking other servers. The logs revealed that it's a SSH brute force attack which ...
14
votes
2answers
609 views

Does it make sense to hash a session id before passing it to an advertisement partner?

My company runs a webshop. We work with a partner that gives discount vouchers to our customers after they buy (the vouchers can be used in other online shops) and also gives vouchers for our shop to ...
8
votes
2answers
553 views

Plain Text Password Reset Vulnerability

If I receive an email with a plain text generated password (in response to a password reset request), is this a vulnerability? The password expires after one use, in other words the user has to change ...
5
votes
3answers
387 views

Are CSRF Attacks Really Blind

I'm new to CSRF attacks but don't see how they are always blind. Let's say we are dealing with a site where the asset we need to protect is the HTTP response. Something like one's medical history. ...
2
votes
3answers
6k views

Can you tell if your computer was hacked and pictures stolen from 2-6 months ago?

Can a home computer, not wireless, be hacked from the outside and have pictures copied? Can I track and see if that happened?
-10
votes
2answers
363 views

What are the security risks of pirating video or music?

In the case of pirating multimedia, be it video or music, which problems may be caused by the video or music file itself? Could a video or an audio file be used to spread malware? I'm talking about ...
7
votes
3answers
524 views

Password list generation

I've found during a lot of recent pen-tests that companies will use passwords like c0mp4ny@b( for a company called "company abc" Is there any quick and easy way to generate a list of passwords ...
2
votes
3answers
292 views

How good is validating source with request.referer than checksum?

I have 2 portals(both are under my control & domain names are different) In 1st portal, there is a link on click of which User can directly get logged into 2nd portal. Link which will be hit in ...
6
votes
3answers
572 views

Lessen impact of DoS attack on cpu-expensive login?

This is a follow-up to my previous question: Prevent DOS against RSA authentication. This question is also discusses a similar problem: Prevent denial of service attacks against slow hashing ...
3
votes
1answer
233 views

Odd user registered and strange behavior. Is it sinister?

I am running a number of web sites. They are all Drupal based, if that is relevant. Recently I have noticed something odd. All my sites have a user registered with the name "zctonglin". I presume ...
0
votes
2answers
312 views

What service could penetrate my Firewall via UDP on Port 17275?

Has anyone monitored various requests from all over the world on Port 17275 via UDP? My firewall logs show huge amounts of such requests from lots of different IP Adresses. I can't find any ...
2
votes
1answer
368 views

Bypass va_randomize_space and stack-protector

Is a program compiled with the GCC -fstack-protector option and running in a Linux environment with the va_randomize_space kernel variable set to 1, totally protected against buffer overflow attacks? ...
0
votes
2answers
510 views

WPS vulnerability scanning for handshakes to detect the attack

I was able to sniff the EAP packets from the attacker machine with a wireless card on p-mode, however i was not able to sniff this data off the user using the same card under windows. Wireshark, did ...
8
votes
6answers
894 views

Getting credentials using proxy server

Is it possible to get the username and password we enter into sites like facebook using proxy server? The scenario is like this : 1.My laptop is connected to a network. 2.It is configured to use a ...
4
votes
1answer
120 views

Voice Call Safety

When i was dealing with an assistant of my bank through mobile call, she asked me to insert my bank login code after a beep. I was wondering if this procedure is secure against a malicious agent who ...
3
votes
1answer
695 views

secure website against the ping of death attacks

Any programmer is interested in securing his website. So I found this http://www.youtube.com/watch?v=DB4eMFrQYiY&feature=youtube_gdata_player which talks about crashing a website using cmd only. ...
0
votes
1answer
619 views

Sanitizing JavaScript to prevent XSS

I'm going through a vulnerability remediation exercise for a client and am trying to figure out how to best mitigate this particular hole. There's a script on our site that calls up content into a new ...
16
votes
4answers
1k views

What is the easiest way to search massive, leaked databases for persons and personal information?

This may seem like a rather nefarious question, however, my motivations are quite the opposite-- I want to know how at risk I might be! A while ago a very MASSIVE database was leaked that contained ...
2
votes
1answer
870 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 ...
0
votes
0answers
25 views

CRIME attack clarrification [duplicate]

I am not understanding CRIME attack completealy.. First an attacker runs a script to caputure the encrypted cookies later using the captured value an attacker try to bruteforce the next cookie ...
74
votes
8answers
8k views

How would one crack a weak but unknown encryption protocol?

I was reading this interesting question: Is my developer's home-brew password security right or wrong, and why? It shows a weak home-brew algorithm developed by "Dave", and the answers discuss ...
4
votes
3answers
144 views

Does allowing everyone know when a server process was started pose a security risk?

I recently found that in Microsoft .NET framework an impersonated thread is not allowed to request "time at which the current process was started". This could be done intentionally or this could be ...
13
votes
2answers
424 views
+50

Concrete figures on password cracking in the wild

While password guessing is a science, not every attacker out there is up-to-date with the latest advances or cares to invest in GPUs or FPGAs. It's easy enough to test online password guessing ...
5
votes
4answers
252 views

What kind of attacks result in an attacker only being able to leak a site's database?

Of the public disclosures I've seen from recently compromised sites, it seems common for only the database to be leaked, rather than the application code, or rather than a complete takeover. Is this ...
37
votes
4answers
6k views

Should I change the default SSH port on linux servers?

Is there any advantage in changing the SSH port, I've seen people do that, but I can't seem to find the reason why. If you have a strong password and/or a certificate, is it useful for anything? ...
2
votes
1answer
1k views

Can active attacks really decrypt a particular AES-256, CBC, PKCS#7 encrypted file?

I recently found out that active attacks are a threat against AES-256, CBC mode, padded with PKCS#7 (the CBC mode in particular. I should supposedly change to EAX to guard against these attacks). ...
0
votes
2answers
161 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 ...
0
votes
1answer
631 views

How to conduct a disguised LSA attack against OSPF?

I want to do disguised LSA attacks on OSPF network and be able to more analyze, so I do not know how it works in practice. This is a penetration test. The attack is described in the address [+]. I ...
0
votes
1answer
202 views

What type of attack should be used in order to pass this authentication

I am practicing the Astalavista Wargames and i came across this challenge. The question is: Bob wrote a piece of software but the password verification doesn't seem to work. You must find a way to log ...
5
votes
2answers
348 views

Is this a DNS attack?

The following graph shows the UDP DNS queries/sec (blue) and DNS responses/sec (red) of traffic passing a router over the preiod of 4 days. DNS query is a DNS packet with query/response flag set to 0 ...
1
vote
5answers
838 views

Site backdoor & eval()

I'm running a Joomla 1.7 site which was hacked today. Below script did the hack. ...
4
votes
2answers
532 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
360 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
766 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
148 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
414 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
922 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
291 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
15k 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
378 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 ...
6
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 ...