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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3
votes
1answer
785 views

How can the OpenSSL CCS Injection vulnerability (CVE-2014-0224) be exploited?

Just curious how this one works in practice and if it's as much of a risk as has been made out? It says you actively require a MiTM scenario, which is understandable, but then what are the steps to ...
5
votes
3answers
413 views

Why does printf() vulnerability require 4-bytes of junk data? - “Hacking: The Art of Exploitation”

I've been reading "Hacking: The Art of Exploitation 2nd Ed." and I hit a part that's not explained clearly enough for me. In the section "Writing to an Arbitrary Address" Jon Erickson creates a ...
5
votes
0answers
36 views

Why does printf() vulnerability require 4-bytes of junk data? - “Hacking: The Art of Exploitation” [duplicate]

I've been reading "Hacking: The Art of Exploitation 2nd Ed." and I hit a part that's not explained clearly enough for me. In the section "Writing to an Arbitrary Address" Jon Erickson creates a ...
2
votes
2answers
176 views

How do I make a working example of a “Dangling Pointers” exploit? (or where do I find it online)

I was recently reading about buffer overflows and dangling pointers. I read "Smashing the stack for fun and Profit " by Aleph1 and that paper was really clear and concise in explaination. On the ...
0
votes
1answer
102 views

CSRF vulnerability in CGI/shell script web interface of hardware

I have a web interface to a hardware that is primarily used to reboot the hardware. Reboot can be done only by authenticated user.The web interface is written in CGI/shellscript. It does not use any ...
0
votes
1answer
75 views

Is API hooking done by a process in a shared page, visible to all other processes?

Assume, I have an executable which hooks the API CreateFileW located in Kernel32.dll which is shared globally across the system for all other processes. From hooking I mean, that I have overwritten ...
-2
votes
1answer
88 views

Proccess to exploit an OS vulnerability [closed]

What are the steps to use an exploit on an OS vulnerability? I tried the popular ms08-067 on an XP machine, following a guide found on the internet, discovering Metasploit etc., but I can't figure ...
0
votes
2answers
61 views

What type of probing sends GET /“ data ” to a server?

During monitoring of webserver logs I've stumbled upon those standard probings for wordpress exploits etc, like No route found for "GET /wp-login.php" (uncaught exception) No route found for "GET ...
1
vote
3answers
92 views

iPhone 5c iOS 7.1 deleted video recovery?

Can a video that was deleted from an iPhone 5c running iOS 7.1 be recovered? 1) the video was not in the camera roll 2) the video was deleted 3 weeks before seizure of device 3) app used to ...
1
vote
2answers
218 views

Is it illegal to publish an exploit against a known vulnerability in US?

Is it illegal to publish an exploit against a known vulnerability in US? The exploit could be published in one's blog or places like exploit-DB. It seems that in countries like Germany and France such ...
2
votes
2answers
1k views

Is OpenSSL CCS Injection (CVE-2014-0224) critical?

Recently the CCS Injection was discovered in OpenSSL (CVE-2014-0224) http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0224. It allows man-in-the-middle attackers to consequently hijack sessions ...
1
vote
4answers
350 views

How do exploits and payloads work together?

I knew about the metasploit framework since a few good years ago, but I never really got into it. I have some knowledge when it comes to networks, but I am not a PRO. I've tested some things with ...
0
votes
3answers
168 views

Practicing pentesting locally

After watching videos and downloading just about every possible pen-testing tool out there to play around with and learn. How do you setup test beds and practice scenarios to crack? With RE people ...
1
vote
2answers
164 views

Heap spray against 64-bit processes - possible?

Are heap spray exploits possible, if the process we're attacking is a 64-bit process? Naively, it seems like the 64-bit address makes it difficult to mount a heap spray: to fill all (or a significant ...
31
votes
3answers
12k views

How do you stop a hacker when their IP address is 0.0.0.0?

Wordfence reports the following visitor: An unknown location at IP 0.0.0.0 visited 4 hours 45 mins ago IP: 0.0.0.0 Browser: Baiduspider version 2.0 Mozilla/5.0 (compatible; Baiduspider/2.0; ...
5
votes
1answer
176 views

Information disclosure attack, using a heap overflow

A typical strategy for defeating ASLR is to find both a buffer overflow bug and an information disclosure bug. But when attacking servers that are automatically restarted whenever they crash/die, is ...
1
vote
1answer
191 views

Metasploit generating strange shellcode

So I just used metasploit to generate the payload/linux/x86/shell_bind_tcp payload without null bytes (generate -t raw -b '\x00' -f shellcode). Here's the shellcode: $ xxd -p shellcode ...
1
vote
1answer
207 views

Exploiting Writeable SNMP

So, I've come across a couple of devices that are using default writable community names for SNMP such as 'private' (on windows machines) and 'Secret c0de' (on Brocade switches). I'm aware of the ...
0
votes
1answer
72 views

3 byte address of system call and exit call

i am trying to exploit a buffer overflow vulnerability in ubuntu (kernel version 3.0.0-12 generic i686) by using the method return to libc and the stack is not exploiting ? By while exploiting i ...
0
votes
1answer
46 views

8 extra bytes in stack

i am new to buffer overflow and learning from securitytube.net website but in 7th video i got stucked Buffer Overflow Primer Part 7 (Exploiting A Program Demo) In this when the value of egg is passed ...
3
votes
3answers
309 views

Memory Corruption in C/C++

I'm doing a study on Memory Corruption. I need to compile a list of all the exploitable memory corruption issues that have been recognized till date and provide a sample vulnerable code for it. I ...
0
votes
0answers
100 views

exploiting buffer overflow

when i download a copy of vulnerable program and try to exploit it by buffer overflow (any internal function calling as a payload) it works. but when i made a same type of vulnerable program in c i am ...
0
votes
2answers
299 views

Is possible to exploit C#, Java, Python or any language that is running inside VM (i.e. managed runtime)

Is it possible to exploit a vulnerable application that is running inside a process virtual machine? Let's say that we have buffer overflow vulnerability in a Java application but the JVM isn't ...
0
votes
1answer
108 views

How is a process forced to execute binary code?

I want to understand how a vulnerable internet facing process on some computer is exploited to run arbitrary binary code. I understand how buffer overflows could be used to overwrite the return ...
1
vote
1answer
394 views

DNS settings compromised from WAN on Edimax ADSL router

My home network Edimax AR-7084gB ADSL modem/router with firmware verison 2.9.5.0(RUE0.C2A)3.5.18.0 was exploited from WAN few days ago. The attacker changed DNS server settings - primary server to ...
2
votes
3answers
324 views

How dangerous is the security hole CVE-2014-019?

There is a security hole CVE-2014-019 in the Linux kernel since 2.6.31-rc3 which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges How ...
3
votes
1answer
117 views

How does binary code execution vulnerability work on a modern OS?

In a modern OS I think that: the .text section where binary assembled CPU instructions are stored cannot be modified the .data/.bss section is marked as no-execute so that the information there will ...
2
votes
1answer
79 views

msfvenom -b flag not working?

When using msfvenom, I am under the assumption that the following syntax should give me shellcode without \x00 \x0a \x0d or \x40, because of the -b option msfvenom -p windows/shell/bind_tcp -b ...
4
votes
2answers
221 views

What happens if my ISP gives me an IP address that's already being used [closed]

Like the title says, what happens if my ISP gives my connection (by accident/on purpose) a public IP address that someone else is currently using to browse the web or send an email or pay his bills? ...
77
votes
7answers
10k views

Why do I hear about so many Java insecurities? Are other languages more secure?

I really like the Java programming language, but I continuously hear about how insecure it is. Googling 'java insecure' or 'java vulnerabilities' brings up multiple articles talking about why you ...
1
vote
0answers
36 views

where to find a detailed demonstration on how to imitate the Token Kidnapping exploit by Argeniss?

I am looking for a way to do the Token Kidnapping’s Revenge exploit by Argeniss. (The vulnerability is explained in here) I am studying security (beginner) and I would like to imitate the attack to ...
0
votes
1answer
130 views

compromising DVRs to become bitcoin mining bot [duplicate]

I read this article, about an exploit which highjacks a DVR to become a "bitcoin mining bot". The heart of the attack is to send a binary using just echo comands to the device, which acts as a ...
2
votes
2answers
270 views

Specific security concerns with (now unupdatable) Win XP [duplicate]

I'm trying to quantify the exact risk I'm subjecting my PC to if leaving it with Windows XP as opposed to upgrading it to e.g. Windows 7, an upgrade that would be very time-costly in my case. I don't ...
-4
votes
2answers
184 views

What types of software vulnerabilities are out there? [closed]

I have search a lot in the internet and I didn't find anything that is directly answer my question. What type of vulnerabilities are out there. I mean vulnerabilities like buffer overrun, not like XSS ...
2
votes
2answers
339 views

I've found security vulnerability in current linux distribution. What next?

I've installed ubuntu server 12.04 on VM two weeks ago. I've created regular snapshots. XXX time ago I've noticed unusual activity and I've found that a backdoor was installed into my server. One of ...
2
votes
1answer
64 views

Similar products to MS EMET [closed]

Following the weekend announcement from Microsoft regarding the vulnerability in IE I have been looking at additional security defences for our endpoints. I've read some technical documentation and ...
1
vote
1answer
93 views

Is nc -l unexploitable?

Suppose I want to set up a server as a test, and I want it exposed to the Internet, giving any IP access. It could be for any reason or no reason. I don't want it to be at risk of a buffer ...
11
votes
4answers
1k views

Are exploits platform dependent?

Looking over an overview of the newest published IE exploit, I noticed what I think is assembly. I don't know anything about exploit development, but I know a little about assembly. Seeing that ...
6
votes
2answers
262 views

Zero-Day Exploit targeting Internet Explorer Versions 9 through 11

Few days ago, FireEye has found a vulnerability, which affects all versions of IE (even the latest 11). Microsoft has official statement regarding this issue. FireEye wrote a technical article on ...
0
votes
1answer
123 views

Fomat String vulnerability used to display data outside the function stack frame?

if we run the following code using the input "hi", the output will simply be "hi" main(int argc, char **argv) { char *secret = "This is a secret 1\n"; char *secret2 = "This is ...
3
votes
2answers
214 views

Small, Vulnerable apps for exploit training

I'm looking for some really small apps on Ubuntu for some bufferoverflow exploitation training. I don't want to start off with some huge apps. I know some sites like http://www.oldversion.com.de/ ...
47
votes
7answers
5k views

Can “cat-ing” a file be a potential security risk?

I often use cat on the console to view the contents of files, and every now and then I accidentally cat a binary file which basically produces gibberish and system beeps. However today I've ...
2
votes
0answers
116 views

Is there a way to get msfpayload to generate a regular cmd.exe reverse tcp shell? [closed]

It looks like msfpayload now generates a powershell-based payload when you pass it windows/reverse_tcp_shell. Is there a way to generate a regular cmd.exe reverse shell instead? Thanks!
5
votes
2answers
475 views

How secure is OpenSSH on FreeBSD?

In a discussion about the recent OpenSSL information disclosure vulnerability, the subject of OpenSSH being vulnerable came up. While OpenSSH is not vulnerable due to the problem lying in the TLS ...
1
vote
0answers
67 views

Local lan drive by download

Basically, I'm testing a local network, on which I'm able to use ARP spoofing. I now want to try and infect one of the Windows boxes on the network with a backdoor. I could inject an iframe into their ...
0
votes
2answers
760 views

Heartbleed client side attack: What can the attacker obtain? [duplicate]

If I have got this right in my head it would be a simple enough task to combine arp spoofing on a public WiFi to redirect clients to an evil SSL server which sends malformed heartbeat requests or to ...
5
votes
1answer
879 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 ...
1
vote
1answer
227 views

OpenSSL exploit [closed]

I have read about recent vulnerability in openssl. I tried to exploit one of my cloud servers where I run my web sites. I managed to get 64 KB of data. But what I managed to get was only HTML, CSS, ...
108
votes
5answers
55k 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 ...
1
vote
1answer
84 views

Is it possible to use a .Net payload with metasploit?

I'm not exactly sure how metasploit works when exploiting a target machine, and it has been a while since of played with it, so forgive me. Instead of using meterpreter as a payload in metasploit, ...