The data, tools, and procedures which, when applied to a specific vulnerability, predictably violate the security design of a system.

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185
votes
3answers
41k views

CRIME - How to beat the BEAST successor?

With the advent of CRIME, BEAST's successor, what possible protection is available for an individual and/or system owner in order to protect themselves and their users against this new attack on TLS?
12
votes
2answers
860 views

Protecting cellphones from USB attacks (a.k.a. Juice Jacking)

We have several smartphone with encrypted data on them (BES, iPhone, Android) and want to prevent an unauthorized person from downloading information from the device via USB. The visual assumption ...
83
votes
15answers
13k views

What “hacking” competitions/challenges exist? [closed]

I have always enjoyed trying to gain access to things I'm not really supposed to play around with. I found Hack This Site a long time ago and I learned a lot from it. The issue I have with HTS is that ...
107
votes
5answers
52k views

What should a website operator do about the Heartbleed OpenSSL exploit?

CVE-2014-0160 http://heartbleed.com This is supposed to be a canonical question on dealing with the Heartbeat exploit. I run an Apache web server with OpenSSL, as well as a few other utilities ...
15
votes
3answers
2k views

How can I be protected from pictures vulnerabilities?

I've just read this question What is the corrupted image vulnerability? How does it work? (GIFAR, EXIF data with javascript, etc..) I'm asking myself how can I protect myself and my website's users. ...
16
votes
4answers
2k views

What is the corrupted image vulnerability? How does it work?

What exactly happens when someone injects malicious binary code into an image file (on Windows)? How is that done?
21
votes
3answers
9k views

Stack Overflows - Defeating Canaries, ASLR, DEP, NX

To prevent buffer overflows, there are several protections available such as using Canary values, ASLR, DEP, NX. But, where there is a will, there is a way. I am researching on the various methods an ...
27
votes
2answers
6k views

How do ASLR and DEP work?

How do Address Space Layout Randomisation (ASLR) and Data Execution Prevention (DEP) work, in terms of preventing vulnerabilities from being exploited? Can they be bypassed?
22
votes
10answers
3k views

Vulnerable OS's?

Which vulnerable OS's like for example DVL would you recommend for someone to use for the purpose of pentest/exploitation learning?
23
votes
4answers
5k views

BREACH - a new attack against HTTP. What can be done?

Following on from CRIME, now we have BREACH to be presented at Black Hat in Las Vegas Thursday (today). From the linked article, it suggests that this attack against compression will not be as simple ...
68
votes
9answers
68k views

Can webcams be turned on without the indicator light?

I want to know how secure I am. I've made a series of pentests in my network and one of the things I've tried was to record webcam and microphone. Recording an end-user's microphone seems to be a ...
29
votes
6answers
2k views

Is there a difference between GET and POST for web application security?

I have 2 choices in sending data between 2 web applications. I encode the data in Base64 and append to the URL and retrieve these parameters at my destination application and decode the parameters. ...
18
votes
3answers
701 views

Where to report malicious URLs, phishing, and malicious web sites?

I recently discovered that my web site was hacked: there was a HTML hidden div selling about shoes... I Googled the text in question and voila: thousands of sites have been hacked. Check this out: ...
12
votes
5answers
541 views

What is the potential impact of the alleged OpenBSD IPSEC attack?

Recently there is a bit of concern over encryption back doors in IPsec and while the status of this has not been confirmed, I don't know what impact something like this might have. For instance, does ...
6
votes
5answers
584 views

How should I serve untrusted / unsanitized documents (PDF, DOC, XLS) to end users over the web?

My website will be hosting documents for end users and I would like to make this as secure as possible. Question Assuming that I have a need to share documents on a website that may contain hostile ...
7
votes
1answer
1k views

How will security need to be changed if P=NP?

If we suppose that it is found that P=NP, how will security measures need to be changed? I'd like to know the major security measures that are affected, and how they would need to be changed. We can ...
6
votes
3answers
3k views

Is it possible to inject HTML into image to provoke XSS?

Some answers mention that it's possible to inject attacker-controlled HTML into images and therefore provoke XSS. I guess that this HTML will be processed by browser only if hole exists in browser. ...
5
votes
10answers
568 views

Can a compromised mobile phone be used to penetrate a desktop or server?

Can a compromised mobile phone be used to penetrate a desktop or server, such as when you plug the phone into the server or desktop for plug and play? I don't know what protocol the transfer is ...
6
votes
3answers
394 views

Security implications of an exploited router

So I completely understand that routers and local networks need to be kept locked down, etc. What real security threats can come about from an attacker who has remotely accessed (telnet or web gui) ...
6
votes
5answers
1k views

Suggested reading list: OS exploits

In computer security, my areas of interest include x86 processors, binary exploitation and reverse engineering. I'm also interested in the certain aspects of the minix and the linux kernel(memory ...
7
votes
4answers
396 views

How should I escalate a vulnerability that is dismissed by the vendor?

I've come across a vulnerability that secure@microsoft does not think is worth pursuing. I would estimate that there are many, many customers affected by this issue. I do not want to start a ...
9
votes
2answers
690 views

Why is Firesheep Unable to Session Hijack over SSL?

Why is Firesheep unable to session hijack when a user is using SSL?
5
votes
2answers
1k views

Exploits or other security risks with SVG upload?

I have a site, where people can upload graphics, you might think of it like an image hoster or a forum for pictures. Now, I allow upload of raster graphics to a certain size, but no vector graphics ...
4
votes
3answers
1k views

Are there any tools that focus on shellcode analysis?

Shellcode presents certain challenges for disassembly. It often self-modifies, jumps to the stack (where the shellcode will likely be placed), and relies on certain unusual tricks that standard ...
4
votes
5answers
3k views

What kind of attacks against home router's NAT do exist?

I always thought NAT was some kind of a security feature and I still think it is, because if it didn't existed the internet, respectively the clients behind NATs, would be even more insecure, since ...
3
votes
5answers
384 views

Was the ASP.NET Padding Oracle exploit exposed in an ethical manner? What could have been done differently?

This is a multi-part question.... In regards to the ASP.NET Padding Oracle, (demo link)was that security exploit dealt with in an ethical manner? What could have been done differently or better? ...
68
votes
5answers
1k views

How can I protect myself from this kind of clipboard abuse?

Clipboard abuse from websites Many websites use JavaScript or CSS to stealthily insert or replace text in the user's clipboard whenever they copy information from the page. As far as I know this is ...
17
votes
7answers
1k views

How to exploit the “PHP_MAGIC_QUOTES ON” vulnerability in order to cause max damage?

I've found a whole lot of SQL injection exploits in some systems I maintain. I know how to prevent the injection, but I would like to demonstrate to my CEO and CTO how dangerous it is if we don't have ...
11
votes
6answers
366 views

Can a website determine what OS or webbrowser a visitor is using if the useragent is blanked/changed?

Assume that a visitor to a website has changed his useragent to something like the following, but he's using linux: Mozilla/5.0 (Windows NT 6.2; rv:20.0) Gecko/20121202 Firefox/20.0 Assume that the ...
9
votes
2answers
3k views

How “leaking pointers” to bypass DEP/ASLR works

I was wondering if anyone could give me some clues on how "leaking pointers" to bypass DEP/ASLR work. I read here: The only way to reliably bypass DEP and ASLR is through an pointer leak. This ...
5
votes
1answer
783 views

Does xkcd.com/1353 overstate heartbleed's capability?

Today's xkcd has characters discussing heartbleed: Megan: I mean, this bug isn't just broken encryption. Megan: It lets website visitors make a server dispense random memory contents. Megan: It's ...
5
votes
2answers
882 views

What security standards and regulations are in place for bank ATM?

Are there any international or US mandated standards and regulations that apply to communications between automatic teller machines and bank's central office? Are banks or ATM operators subjected to ...
-2
votes
6answers
4k views

Use PHP to check uploaded image file for malware?

I want my users to be able to upload a photo. Currently I am not checking the uploaded photo for problems of any kind, although I do limit the size to 32k. Is there any way for me to check uploaded ...
6
votes
1answer
358 views

How do I check the code of a Chrome extension to make sure it's not stealing my info?

I've been reading more and more about just how much access browser extensions can have to your data. This is a little unsettling, so I'm curious if there is a way to Vet these extensions and make sure ...
3
votes
2answers
598 views

Found some malicious Javascript - how did it get there?

Found some malicious javascript on a Joomla site which we noticed has returned after being deleted a week ago. Also noticed that www.cssstickyfooter.com is infected by the same code. If you're ...
0
votes
2answers
608 views

Ways to completely spoof browser user agent and hiding OS to a webserver

This is a follow-up to the following question: Can a website determine what OS or web browser a visitor is using if the useragent is blanked/changed? If I have understood the answers correctly, a ...
5
votes
6answers
454 views

Determining vulnerable software on client machines

I am interested in how attackers manage to identify vulnerable versions of software on client machines, behind a large network or stand alone at home. I am not interested in portscanning at all, as ...
5
votes
8answers
2k views

Retrieving OSx Keychain passwords

I have a computer forensics style osx login.keychain file that I am trying to find the passwords from. I have a very weak mac which I used crowbarkc on to try and brute force but the horsepower is ...
4
votes
2answers
542 views

Possible arbitrary file download vulnerablity

I am auditing a possible vulnerable piece of ASP code on a Windows enviroment. The code is as follows: If InStr(strPath, "\Only\Download\From\Here\", CompareMethod.Text) = 0 Then Basicly it is ...
3
votes
1answer
234 views

Can TLS Compression be enabled on 3rd party CDN sites that have no authentication?

In this answer, @Thomas Pornin talks about remediating the CRIME attack and says: (It is a shame to have to remove SSL compression, because it is very useful to lower bandwidth requirements, ...
2
votes
2answers
515 views

Possible website hack?

I have been receiving some strange requests on my website from foreign countries. For example, 218.83.152.252/judge112233.php, /www.travelimgusa.com/ip.php, //59.53.91.9/httpproxy/proxyheader.php, ...
2
votes
2answers
1k views

Is it possible to change the admin user/password remotely on a router without logging in?

Is it possible to change the admin user/password remotely on a router without logging in? If yes, how so?
-1
votes
1answer
221 views

Exploit Compilation Problem [closed]

I am trying to compile the following exploit: http://www.exploit-db.com/exploits/10613/ But get the following error: local.c:12:22: fatal error: asm/page.h: No such file or directory compilation ...