CVE-2024-2073: Block Inserter SQLi Vulnerability

CVE-2024-2073 Overview

CVE-2024-2073 is a SQL injection vulnerability in SourceCodester Block Inserter for Dynamic Content 1.0. The flaw resides in the view_post.php script, where the id parameter is passed to a database query without sanitization. Authenticated attackers can inject arbitrary SQL statements remotely over the network. The issue is tracked as VulDB entry VDB-255388 and maps to [CWE-89]. Public exploit details have been disclosed, increasing the risk of opportunistic exploitation against exposed installations.

Critical Impact
Successful exploitation allows remote attackers to read, modify, or destroy database contents, leading to full compromise of application data confidentiality, integrity, and availability.

Affected Products

Oretnom23 (SourceCodester) Block Inserter for Dynamic Content 1.0
Deployments exposing view_post.php to authenticated users
Installations without upstream input validation or a Web Application Firewall

Discovery Timeline

2024-03-01 - CVE-2024-2073 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-2073

Vulnerability Analysis

The vulnerability exists in view_post.php, which accepts a user-supplied id argument and concatenates it directly into a SQL query. Because the parameter is not validated, sanitized, or bound as a prepared statement parameter, attackers can break out of the intended query context. An attacker with low-privilege access can inject UNION-based, boolean-based, or time-based payloads to enumerate database schemas and exfiltrate records. The CWE-89 classification confirms improper neutralization of special elements used in an SQL command as the root weakness.

Root Cause

The root cause is unsafe construction of SQL queries in view_post.php. The id parameter flows from an HTTP request into the query string without type casting or parameterization. This pattern is common in legacy PHP applications that rely on string concatenation with mysqli_query or similar APIs. The absence of prepared statements or an ORM abstraction layer allows attacker-controlled input to alter query logic.

Attack Vector

Exploitation requires network access to the vulnerable web application and low-level user privileges. The attacker crafts a malicious HTTP request targeting view_post.php?id=<payload>, where the payload contains SQL metacharacters. No user interaction is required. Because the endpoint returns query results in the response, in-band SQL injection techniques are practical. Refer to the GitHub SQL Injection Exploit writeup and VulDB entry #255388 for the disclosed proof of concept.

Detection Methods for CVE-2024-2073

Indicators of Compromise

HTTP requests to view_post.php containing SQL metacharacters such as ', ", --, UNION SELECT, or SLEEP( in the id parameter
Web server logs showing abnormally long id values or URL-encoded SQL keywords
Database error messages returned in HTTP responses referencing MySQL syntax errors
Unexpected outbound queries or connections originating from the web application database user

Detection Strategies

Deploy Web Application Firewall rules matching SQL injection signatures targeting the id parameter of view_post.php
Enable database query logging and alert on queries containing tautologies (for example OR 1=1) or stacked statements
Correlate web access logs with database audit logs to identify anomalous query patterns tied to a single client IP

Monitoring Recommendations

Monitor HTTP 500 responses from view_post.php as an early indicator of injection probing
Track authentication events preceding suspicious view_post.php requests to attribute activity to specific accounts
Baseline normal query volume against the underlying database table and alert on statistical outliers

How to Mitigate CVE-2024-2073

Immediate Actions Required

Restrict access to the Block Inserter for Dynamic Content application behind authentication and IP allowlisting until a patched version is deployed
Deploy Web Application Firewall rules to block SQL metacharacters in the id parameter of view_post.php
Rotate database credentials if log review indicates prior exploitation attempts
Audit database contents for unauthorized modifications, particularly to user and content tables

Patch Information

No vendor patch has been published in the referenced advisories at the time of this writing. Organizations should treat Block Inserter for Dynamic Content 1.0 as end-of-support and evaluate migration to a maintained alternative. Track the VulDB advisory for future vendor updates.

Workarounds

Modify view_post.php to cast the id parameter to an integer using intval($_GET['id']) before use in any SQL statement
Refactor database access to use parameterized prepared statements via mysqli or PDO
Apply least-privilege permissions to the database user account so it cannot read outside the intended tables or execute administrative commands
Disable the affected endpoint if the Block Inserter functionality is not business-critical

bash

# Example ModSecurity rule to block SQL injection payloads targeting view_post.php
SecRule REQUEST_URI "@contains view_post.php" \
    "phase:2,chain,deny,status:403,id:1002073,msg:'CVE-2024-2073 SQLi attempt'"
    SecRule ARGS:id "@rx (?i)(union\s+select|sleep\(|or\s+1=1|--\s|';)" \
        "t:none,t:urlDecodeUni"