What they do is the answer
Answer:
Answer explained below
Explanation:
Yes, you can let Set-uid program that is owned by root to run your code instead of /bin/ls but it has it's own drawbacks and is actually not safe.
As you can not rely on that since some of the shells if different from the ruid drop an euid which is actually not safe.
execl("/bin/ls", "ls",(char *)0);
run this under your main program.
Since it can have a root previlege,
-$ cd /tmp/
/tmp$ sudo su
:/tmp# gcc -o system system.c
:/tmp# chmod u+s system // changing file permissions
:/tmp# exit
exit
:/tmp$ cp /bin/sh /tmp/ls
:/tmp$ ./system
<u>Steps:
</u>
1. The first thing you need to do is copy /bin/sh to /tmp.
2. After copying /bin/sh to /tmp set a new name ls but make sure your sh ->.zsh.
3. Set PATH to current directory. /tmp.
4. Compile
5. Run the program system and you can get your root previledge.
Now, with the above exmaple if you change /bin/sh soo that it points back to /bin/bash and repeat all the previous steps, you will not be able to get your root previledges.
If I were you, I would just try each of these. But the actual answer is C. Ctrl+U
The first one is used to copy the text (C-Copy)
The second one bolden your text (B-bold)
The last one is used to manage the scale.
Answer:
Pattern.
Explanation:
The pattern attribute can be used only with input boxes that store text.
Generally, the pattern attribute cannot be used with other types of data in computer programming.
Basically, it comprises of data types which mainly includes an attribute of the text, e-mail, telephone, uniform resource locator (URL), search input types and password which must all be matched with the input value in order to pass an authentication or authorization.
