CVE-2008-5637 in ParsBlogger
Summary
by MITRE
SQL injection vulnerability in blog.asp in ParsBlogger (Pb) allows remote attackers to execute arbitrary SQL commands via the wr parameter.
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Analysis
by VulDB Data Team • 11/11/2024
The vulnerability identified as CVE-2008-5637 represents a critical SQL injection flaw within ParsBlogger version Pb, specifically affecting the blog.asp component. This vulnerability manifests through the wr parameter which is improperly validated and sanitized, creating an exploitable entry point for malicious actors to inject arbitrary SQL commands into the underlying database system. The flaw exists in the application's input handling mechanisms where user-supplied data is directly incorporated into SQL query construction without adequate sanitization or parameterization.
This SQL injection vulnerability operates under CWE-89, which categorizes it as a classic SQL injection attack vector where attacker-controlled input is seamlessly integrated into database queries. The operational impact is severe as remote attackers can execute unauthorized database operations including data retrieval, modification, deletion, and potentially gain elevated privileges within the database environment. The vulnerability specifically affects the blog.asp script which processes user requests and handles the wr parameter, making it a prime target for exploitation in web application attacks.
The exploitation of this vulnerability aligns with ATT&CK technique T1190, which describes the use of SQL injection to gain unauthorized access to database systems. Attackers can leverage this flaw to bypass authentication mechanisms, extract sensitive information from the database, manipulate stored data, or even execute operating system commands if the database server has appropriate permissions. The remote nature of the attack means that no local system access is required, making it particularly dangerous as attackers can exploit this vulnerability from anywhere on the internet.
The technical implementation of this vulnerability stems from poor input validation practices within the ParsBlogger application. When the wr parameter is processed, it undergoes insufficient sanitization, allowing malicious SQL syntax to be passed directly to the database engine. This creates opportunities for attackers to inject SQL commands that can manipulate the database structure, access restricted information, or even perform administrative operations on the database. The vulnerability is particularly concerning because it affects a core blogging functionality component that likely handles user-generated content and system parameters.
Organizations utilizing ParsBlogger version Pb should implement immediate mitigations including input parameter validation, proper SQL query parameterization, and input sanitization techniques. The recommended approach involves implementing prepared statements or parameterized queries to prevent user input from being interpreted as SQL commands. Additionally, input validation should be enforced at multiple layers including application-level filtering, database-level restrictions, and network-level firewalls to limit potential attack surface. Regular security audits and vulnerability assessments should be conducted to identify similar weaknesses in other components of the application stack.