CVE-2021-34165 – This SQL injection vulnerability in Basic Shopp... (How to Fix)

📋 TL;DR

This SQL injection vulnerability in Basic Shopping Cart 1.0 allows remote attackers to bypass authentication and gain administrative privileges by manipulating SQL queries. Any organization using this specific e-commerce software without proper input validation is affected.

💻 Affected Systems

Products:

Sourcecodester Basic Shopping Cart

Versions: 1.0

Operating Systems: Any OS running PHP

Default Config Vulnerable: ⚠️ Yes

Notes: Affects the default installation with no additional configuration required for exploitation.

📦 What is this software?

Basic Shopping Cart by Basic Shopping Cart Project

View all CVEs affecting Basic Shopping Cart →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of the shopping cart system, allowing attackers to steal customer data, modify orders, manipulate pricing, and potentially pivot to other systems.

🟠

Likely Case

Unauthorized administrative access leading to data theft, order manipulation, and defacement of the shopping site.

🟢

If Mitigated

Limited impact with proper input validation and parameterized queries preventing SQL injection.

🌐 Internet-Facing: HIGH - The vulnerability is remotely exploitable without authentication on internet-facing systems.

🏢 Internal Only: MEDIUM - Internal systems are still vulnerable but require network access.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: CONFIRMED

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploit code is publicly available and requires minimal technical skill to execute.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Not available

Vendor Advisory: Not available

Restart Required: No

Instructions:

1. Remove Basic Shopping Cart 1.0 from production
2. Migrate to a supported, secure e-commerce platform
3. If continuing use is necessary, implement parameterized queries and input validation

🔧 Temporary Workarounds

Implement Input Validation

all

Add server-side validation to sanitize all user inputs before processing SQL queries

Manual code modification required - no single command

Web Application Firewall Rules

all

Deploy WAF rules to block SQL injection patterns in login requests

WAF-specific configuration required

🧯 If You Can't Patch

Isolate the vulnerable system behind a reverse proxy with strict input filtering
Implement network segmentation to limit access to the vulnerable system

🔍 How to Verify

Check if Vulnerable:

Check if Basic Shopping Cart 1.0 is installed by examining the software version in admin panel or source code

Check Version:

Check PHP files for version information or examine admin panel footer

Verify Fix Applied:

Test authentication bypass attempts using SQL injection payloads; successful login indicates vulnerability

📡 Detection & Monitoring

Log Indicators:

Unusual SQL error messages in application logs
Multiple failed login attempts followed by successful admin login from same IP
Login attempts containing SQL keywords like UNION, SELECT, OR

Network Indicators:

HTTP POST requests to login endpoints containing SQL injection payloads
Unusual traffic patterns to admin functions

SIEM Query:

source="web_logs" AND (uri="/login.php" OR uri="/admin/login.php") AND (message="SQL" OR message="syntax" OR message="union" OR message="select")

📊 Metadata

CVE ID: CVE-2021-34165

CVSS v3 Score: 9.8 (CRITICAL)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-89

Published: July 30, 2021

Last Updated: November 21, 2024

🔗 References

https://www.exploit-db.com/exploits/49741 Exploit,Third Party Advisory,VDB Entry
https://www.exploit-db.com/exploits/49741 Exploit,Third Party Advisory,VDB Entry

📤 Share & Export

📄 Export Markdown 📋 Export JSON

🔗 Related Vulnerabilities

If you're affected by CVE-2021-34165, you might also want to check these: