Tagged Questions

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

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0
votes
3answers
255 views

Does “Start the following program on connection” mean what I think it means?

In the Programs tab of Windows' RDP application, there is a Start the following program on connection option. Does On Connection literally mean on connection? As in will the program I specify be ...
4
votes
1answer
5k views

Finding environment variables with gdb, to exploit a buffer overflow

I have to exploit a very simple buffer overflow in a vulnerable C++ program for an assignment and I am not being able to find the environment variable SHELL. I have never worked with BoF before, and ...
0
votes
2answers
296 views

Unexplained downloading

I was just watching as my bandwidth monitor spiked downloading a file. I checked my current netstat and I didn't recognize one of the IPs so I started capturing the data with Wireshark. The ...
4
votes
2answers
631 views

Compromised server redirecting only requests from Google

I found something very suspicious. When connecting to www.pulseexpress.com following a Google link, the server redirects you to some very dubious site that sends you a .exe file right away: # host ...
7
votes
1answer
2k 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 ...
25
votes
4answers
11k views

Can A Powered Down Cell Phone be Turned On Remotely?

I know this is tin-foil hat fodder, but at least one judicial opinion (http://www.politechbot.com/docs/fbi.ardito.roving.bug.opinion.120106.txt) referenced a bug that could track/listen in on the ...
4
votes
1answer
677 views

How to perform security exploits/penetration on devices like iPhone's, PSP's, and Android to run your owncode?

I was really interested in getting into performing exploits to install my own code on devices, instead of waiting for others. I figure its a great way for me to learn about security on devices like ...
6
votes
1answer
343 views

Epson Projector security threats

I have an EPSON PROJECTOR (model EB-824H) And I would like to use it in our company. As I know (but not sure) this kind of projector has no WIFI,no network card and there is no HD in this PROJECTOR It ...
7
votes
3answers
514 views

How to gain a shell?

I'm doing an exercise (exploit-exercises.com) that requires me to gain access to a shell running as another user. My question is this: I can create application that is guaranteed to be run by the ...
2
votes
1answer
930 views

Help in understanding a PHP exploit code found on a wordpress application

I've found this code in base 64 on all php files of one of my client's sites (wordpress) and I'm trying to understand what it does. I'm also trying to figure out if it was an application exploit or a ...
6
votes
5answers
691 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 ...
4
votes
1answer
229 views

How do attackers gather remote feedback for identifying and exploiting buffer overflows?

Local buffer overflows are relatively easy to understand: throw some input at an interface and see if the process fails with a core dump or similar. However, in my mind, this kind of exploit works ...
5
votes
10answers
594 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 ...
1
vote
1answer
288 views

Trying to land a shell on a remote service

Here's the scenario, part of a wargame/CTF type exercise. There is a vulnerable program running as a service on the remote host. I have access to a copy of the binary, which has a stack overflow from ...
6
votes
2answers
2k 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 ...
1
vote
2answers
3k views

Find the hack in the Apache2 logs?

The hack was a failure, as they were not able to put the created page as the home page. But we found recently a manipulated page on our website (via the rss). So I looked in the Apache2 logs and ...
2
votes
3answers
132 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 ...
6
votes
4answers
747 views

if the hypervisor is hacked are all guests affected as well?

I'm guessing that all guests would be screwed, if the hypervisor is hacked. I found this article, but it seems to be more focused on privilege escalation of guests. I'm more interested to hear about ...
6
votes
1answer
404 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
1answer
294 views

Is there a way to use multiple firewalls / antivirus for penetration testing?

I don't really know how to do either, but I was wondering if it was possible to have multiple firewalls / virus scanners installed at once, and use a 3rd party program to specify which one is running ...
13
votes
1answer
640 views

SCADA / PLC exploit code was released in metasploit. Now what?

Wired reports that there are many security issues with Programmable Logic Controllers (PLCs) and now there is an easy to use tool to scan and detect vulnerabilities. They say it's so easy, the ...
2
votes
1answer
318 views

Possible Hijacked Email Server [closed]

MAILER-DAEMON notices are spamming our email administrator account, causing it to fill up, and bringing down our email server. Our email server is a Virtual FreeBSD box hosted by Verio. Their ...
6
votes
2answers
421 views

Videos and visual tutorials on Format String Vulnerabilities

Anyone know of good format string vulnerability tutorials/videos that demo how to test on a web app, such as modifying the URL. I've watched Vivek's videos from securitytube and another from ...
0
votes
3answers
429 views

How to rewrite config files using SNMP?

I scanned a router and found that the community string is public. The write access is also enabled. Now I want to change the configuration of the router. Can anybody tell me about tools and tutorials ...
9
votes
2answers
1k views

Which Linux kernel vulnerabilities allow installing a kernel-level rootkit?

My question is related to vulnerabilities that allow installing a Linux kernel-level rootkit (for example, to modify the execution flow inside the kernel; for return-oriented attacks; or to modify ...
6
votes
3answers
2k views

Where can I find exploit code?

I am doing VA/PT on a sample web application. I run the nessus scanner and I found some high severity problems. It is related to HP System Management Homepage. The CVE numbers are: 2010-1917, ...
10
votes
2answers
264 views

How to protect against exploitation using a lapsed domain

Consider a domain that had been in active use for some time but is no longer desired — perhaps the company is out of business or a name change took place years ago, or whatever. The domain ...
1
vote
1answer
917 views

Can you describe a real-life scenario of exploiting sticky bits?

Sticky bit are mentioned in every UNIX security book, but I couldn't find anyone that describes the exploitation of Sticky Bit set on a file. Can you?
16
votes
3answers
3k 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. ...
8
votes
2answers
727 views

Local File Download vulnerability - What files can be downloaded to potentially compromise a windows system?

On Linux I have a good idea on what files I would like to get ahold of when you are sitting on a regular file download vulnerability. Any file on the entire OS system is accessible for download, which ...
5
votes
5answers
4k 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 ...
12
votes
2answers
1k 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 ...
1
vote
2answers
1k views

SSL Breach - Does the latest BEAST vulnerability mean SSL Issuers now have to worry about integrity? [closed]

Although many SSL certificates have been boasting extravagant guarantees -- typically around $10k minimum to $250k per breach -- to ensure their certificates are valid, to this date, I've heard that ...
3
votes
5answers
1k views

What programming language does this code use?

Watching this article: http://www.exploit-db.com/exploits/13474/ I can see this: /* * NetBSD * execve() of /bin/sh by humble of Rhino9 */ char shellcode[] = "\xeb\x23" "\x5e" "\x8d\x1e" ...
3
votes
2answers
1k views

Reverse shell connections

Why are reverse shell connections so popular in the event of a successful intrusion? Many "hacking" videos show this and it is often seen in practice. Would not most servers restrict outgoing ...
76
votes
8answers
82k 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 ...
3
votes
3answers
638 views

Are there known hacks or security problems on broadband USB dongles?

USB broadband dongles seem to be common everywhere now though I'm not sure what the most widely accepted name for them is. In case I'm using poor terminology I'm referring to USB sticks which contain ...
2
votes
3answers
433 views

Security Implications of setting passwd as suid

When the passwd command is executed, it runs as the root user. Can't this be exploited? If not, why?
7
votes
3answers
634 views

Remote return into libc attack

It is often shown that non-executable data segemnts are possible to bypass through return-to-libc attacks. It's evident on /bin/sh but is it also possible to invoke a remote shell?
3
votes
1answer
116 views

How can one gain additional privileges from being able to read kernel memory?

Given the ability to read (but not write) arbitrary kernel memory as an unprivileged user, what approaches might one take to gain additional privileges on the system? Ignoring the 'trivial' method of ...
4
votes
2answers
442 views

Cell phone voice mail hacking

The news has been filled recently with the allegations that News of the World employees hacked into the voicemail inboxes of celebrities and crime victims. What flaw was exploited to accomplish this, ...
3
votes
1answer
526 views

Two questions about learning Linux exploit development fundamentals

getting ready to delve into the technical world of vulnerability assessment, and I have two questions about where to find certain information. First, I plan on reading "Understanding the Linux ...
5
votes
1answer
100 views

Modeling vectors of an unknown exploit

Looking for a formula and parameters to feed it that will aid in the isolation of relationships within a system when the origin and cause of an exploit within it is unknown. Here's an example of an ...
6
votes
3answers
212 views

Spamming exploits without user detection

So I asked this question because I had thought that attackers would have a way to identify client software, because surely if 100 different exploits were spammed against a users machine they would ...
3
votes
2answers
630 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 ...
5
votes
6answers
522 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
1answer
206 views

xml library vulnerabilities, regarding post-exploitation

there was some arbitrary code execution that occurred on my os x 10.5 system. this came as a result of opening an xls file with excel for mac. the vnc type program that came with office for mac was ...
2
votes
1answer
156 views

Can a bad guy be judged for gaining access to sensitive information?

Assuming a hacker has sent to somebody a malware. It's a trojan (digitally signed by TeamViewer) which runs automatically when windows starts up and sends the login info to a web site using GET ...
91
votes
15answers
17k 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 ...
4
votes
2answers
2k views

Command line Nessus/OpenVAS or NSE to find specific vulns?

Which methods do you use to quickly scan a network for certain vulnerabilities? I read in the O'Reilly book Network Security Tools that Nessus had the ability to test for one vulnerability only, but ...