c – Attack by buffer overflow, obtaining the password of a locked text file

So, I'm trying to exploit this program that has a buffer overflow vulnerability to get / return a password behind a locked .txt file containing the password. I should not need to use GDB for this.

vuln.c // no changes

#understand 
#understand 
#understand 
#understand 

int main (int argc, char ** argv) {
unsigned pidgeon int = 20;
unsigned int correct_pwd = 0;
unsigned int cock = 25;

char pwd[100];
char entry_pwd[100];

FILE * fptr = fopen ("/ assignment1 / password.txt", "r");

if (fptr == NULL) {
printf ("Error opening passwords safe!  n");
output (1);
}

fscanf (fptr, "% s", pwd);
fclose (fptr);

scanf ("% s", entry_pwd);

sleep (1);
if (strcmp (entry_pwd, pwd)) {
printf ("Incorrect password  n");
}
other{
correct_pwd = 1;
printf ("correct password  n");
}

if (pidgeon! = 20 || cock! = 25) {
printf ("Stack smashing detected !!");
returns 0;
}
if not (correct_pwd) {
printf (" nYou are now authenticated, you deserve a cookie!  n");
fptr = fopen ("/ assignment1 / secret.txt", "r");
if (fptr == NULL) {
printf ("But the cookie jar is broken ...  n");
}
secret of tank[1024];
fscanf (fptr, "% s", secret);
fclose (fptr);
printf ("% s", secret);
}
returns 0;
}

attack.sh // to edit

#! / usr / bin / env bash
echo -en "dddddddddddddddddd" | / assignment1 / vuln

python << @@
print Hello Python! & # 39;
of subprocess import call
call ("echo" I like potatoes ", shell = True)
@@

I know I can cause a segmentation error if I repeat a large enough string, but that does not get me anywhere. I know that fscanf and strcmp are vulnerable areas. My thought process is that I have to pass the conditional statement "if (strcmp (entry_pwd, pwd))" to retrieve the password. And to do this, I would need to execute code that defines entry_pd as pwd.

But I am so lost that I spent hours looking for examples and how to do that and I got stuck. Any help would be appreciated, thank you

How to password protect a folder in Windows Explorer?

A customer asked if he could lock a folder in my documents. Is it possible to do that? I do not think there's a feature but it's worth a try.

Thank you in advance.

security – How to find in Drupal 7 the username and password lost?

Battery Exchange Network

The Stack Exchange network includes 175 question-and-answer communities, including Stack Overflow, the largest and most reliable online community on which developers can learn, share knowledge and build their careers.

Visit Stack Exchange

postgresql – error: failure to authenticate the password for the user "Postgres"

I get a bad 502 gateway on my application and have a look at EB logs. I believe that's the problem:

/var/log/containers/server-8b2907355681-stdouterr.log
-------------------------------------


> @ start / app
> index.js node


Listening
{error: failure to authenticate the password for the user "Postgres"
on Connection.parseE (/app/node_modules/pg/lib/connection.js:553:11)
at Connection.parseMessage (/app/node_modules/pg/lib/connection.js:378:19)
to take. (/App/node_modules/pg/lib/connection.js:119:22)
at Socket.emit (events.js: 189: 13)
at addChunk (_stream_readable.js: 284: 12)
on readableAddChunk (_stream_readable.js: 265: 11)
at Socket.Readable.push (_stream_readable.js: 220: 10)
at TCP.onStreamRead [as onread] (internal / stream_base_commons.js: 94: 17)
name: "error",
length: 104
Gravity: "FATAL",
code: & # 39; 28P01 & # 39;
detail: undefined,
index: not defined,
position: not defined,
internalPosition: undefined,
internalQuery: undefined,
where: not defined,
schema: undefined,
table: undefined,
column: undefined,
dataType: undefined,
constraint: not defined,
file: 'auth.c',
line: & # 39; 328 & # 39;
routine: & # 39; auth_failed & # 39;

However, I have corrected the password in EB Configuration so that it matches exactly the one docker-compose.yml file:

aPI:
to build:
dockerfile: Dockerfile.dev
context: ./server
volumes:
- / app / node_modules
- ./server:/app
environment:
- REDIS_HOST = redis
- REDIS_PORT = 6379
- PGUSER = postgres
- PGHOST = postgres
- PGDATABASE = postgres
- PGPASSWORD = password protected
- PGPORT = 5432

enter the description of the image here

I tried to change postgres at postgres in the Elasticbeanstalk environment variables but this did not solve the problem. I still receive error: failure to authenticate the password for the user "Postgres"

I then deleted the RDS instance and commissioned a new one with the same username and password, case sensitive and all. I've added that RDS to the security group, I always get a faulty 502 gateway with the same error of:

/var/log/containers/server-8b2907355681-stdouterr.log
-------------------------------------
> @ start / app
> index.js node

Listening
{error: failure to authenticate the password for the user "Postgres"
on Connection.parseE (/app/node_modules/pg/lib/connection.js:553:11)
at Connection.parseMessage (/app/node_modules/pg/lib/connection.js:378:19)
to take. (/App/node_modules/pg/lib/connection.js:119:22)
at Socket.emit (events.js: 189: 13)
at addChunk (_stream_readable.js: 284: 12)
on readableAddChunk (_stream_readable.js: 265: 11)
at Socket.Readable.push (_stream_readable.js: 220: 10)
at TCP.onStreamRead [as onread] (internal / stream_base_commons.js: 94: 17)
name: "error",
length: 104
Gravity: "FATAL",
code: & # 39; 28P01 & # 39;
detail: undefined,
index: not defined,
position: not defined,
internalPosition: undefined,
internalQuery: undefined,
where: not defined,
schema: undefined,
table: undefined,
column: undefined,
dataType: undefined,
constraint: not defined,
file: 'auth.c',
line: & # 39; 328 & # 39;
routine: & # 39; auth_failed & # 39;

I've put a new PostgreSQL RDS into use for the third time, ensuring that all usernames and passwords are identical, including uppercase lowercase letters, eliminating all special characters and this times, not only do I have the same error, but I also have this one:

-------------------------------------
/var/log/containers/server-09be251b359b-stdouterr.log
-------------------------------------
> @ start / app
> index.js node

Listening
{Error: connect ETIMEDOUT 172.31.82.39:5432
at TCPConnectWrap.afterConnect [as oncomplete] (net.js: 1097: 14)
errno: & quot; ETIMEDOUT & # 39;
code: & quot; ETIMEDOUT & # 39;
system call: "connect",
address: "172.31.82.39",
port: 5432}

I do not have much to add, if there is someone else who has more experience, I would appreciate your help.

Company password management

Does any one have any recommendations to make regarding business password management solutions? The main requirement is that it be hosted on Prem by us, and of course managed by us?

Thank you 🙂

magento2 – Empty email Magento 2 – Order / Password

In my store, the problem is that when someone creates a new order, the order confirmation (email) is simply displayed blank (blank page). The email address does not show up correctly either.

If you have forgotten your password, you will get the same blank page.

I have also tried the standard configuration but it does not work.

thanks a lot for your help
Best regards

Set the BIOS password in the laptops of users of an organization [migrated]

I have a Windows Server 2012 environment with 50 users in an office. I want to configure the BIOS password for users' laptops (50). How can I define and manage this from a central location?

Google Password Manager or Dedicated Password Manager

Is it better to use Google Password Manager to store all my passwords or a dedicated password manager such as Bitwarden? I've been using the old one for years and I wonder if I should make the change now that we are in 2019.

Results – Results for from a password

In the process of doing so, there is a great deal of information (about 300,000 dados) that can be used for example, or as an example:

                                                                                TEMP_Celcius identification dates
1 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 13.0
2 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 10.0
3 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 8.0
4 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 7.0
5 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 5.0
6 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 4.0
7 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 3.0
8 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 3.0
9 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 2.0
10 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 2.0
11 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 2.0
12 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 2.0
13 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 0.0
14 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 0.0
15 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 0.0
16 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 0.0
17 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 0.0
18 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 0.0
19 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 0.0
20 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 0.0
21 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -1.0
22 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -1.0
23 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -2.0
24 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -1.0
25 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -2.0
26 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -2.0
27 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -2.0
28 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -2.0
29 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -2.0
30 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -2.0
31 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -2.0
32 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -2.0
33 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -3.0
34 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -3.0
35 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -3.0
36 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -3.0
37 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -3.0
38 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -3.0
39 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -3.0
40 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -3.0
41 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -4.0
42 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -4.0
43 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -3.0
44 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -4.0
45 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -4.0
46 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -4.0
47 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -4.0
48 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -4.0
49 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -4.0
50 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -3.0
51 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -3.0
52 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 -2.0
53 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 0.0
54 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 1.0
55 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 2.0
56 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 3.0
57 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 4.0
58 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 6.0
59 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 6.0
60 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 8.0
61 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 9.0
62 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 9.0
63 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 10.0
64 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 11.0
65 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 12.0
66 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 12.0
67 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 12.0
68 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 12.0
69 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 13.0
70 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 13.0
71 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 13.0
72 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 13.0
73 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 12.0
74 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 10.0
75 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 9.0
76 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 8.0
77 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 6.0
78 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 5.0
79 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 5.0
80 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 4.0
81 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 4.0
82 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 3.0
83 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 3.0
84 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 2.0
85 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 2.0
86 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 2.0
87 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 2.0
88 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
89 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 1.0
90 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
91 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
92 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
93 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
94 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
95 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
96 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
97 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
98 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
99 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
100 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -1.0
101 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -1.0
102 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -1.0
103 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
104 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
105 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -1.0
106 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
107 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
108 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
109 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
110 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
111 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
112 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
113 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
114 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -3.0
115 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -3.0
116 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -3.0
117 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -3.0
118 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -3.0
119 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -3.0
120 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -3.0
121 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -3.0
122 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
123 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 -2.0
124 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
125 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 0.0
126 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 1.0
127 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 3.0
128 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 4.0
129 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 5.0
130 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 6.0
131 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 7.0
132 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 8.0
133 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 9.0
134 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 10.0
135 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 10.0
136 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 12.0
137 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 13.0
138 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 13.0
139 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 13.0
140 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 13.0
141 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 14.0
142 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 14.0
143 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 14.0
144 LONNIE POOL FIELD WEAVERVILLE 2014-01-02 14.0

Eu Preciso calcular temperature, max e min por dia. Search results of temperament control results in relation to this one.
You use your personal notes:

tapply (Dados $ TEMP_Celcius, Dados $ Dates, average)

tapply (Dados $ TEMP_Celcius, Dados $ Dates, average, na.rm = TRUE)

aggregate (Dados $ TEMP_Celcius, par = list (TMEDIA = Dados $ Dates), average)

library (tidyverse)
Dados%>%
group_by (Dates)%>%
summarize (average = average (TEMP_Celcius), min = min (TEMP_Celcius), max = max (TEMP_Celcius))

Results obtained following equivalent evaluations. The media are the first to give as an example (01/01/2014) 1 month and a half after 97 days. 27.8.
You have already left to play poker, are you the victim of a favor?

OBS: You are registered in the class "Dates" and "Date" and the temperature and "numeric".

Muito obrigada desde já.