CVE-2006-6880 in PHP-Update
Summary
by MITRE
Multiple SQL injection vulnerabilities in code/guestadd.php in PHP-Update 2.7 and earlier allow remote attackers to execute arbitrary SQL commands via the (1) newmessage, (2) newname, (3) newwebsite, or (4) newemail parameter.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 08/13/2018
The vulnerability identified as CVE-2006-6880 represents a critical security flaw in PHP-Update version 2.7 and earlier, specifically within the code/guestadd.php file. This issue manifests as multiple SQL injection vulnerabilities that collectively expose the application to remote code execution attacks. The vulnerability affects four distinct parameters: newmessage, newname, newwebsite, and newemail, all of which are processed without adequate input validation or sanitization mechanisms. These parameters are typically used in guestbook or comment submission functionalities where users can enter data that gets stored in the database. The absence of proper parameter sanitization creates an exploitable condition where malicious actors can inject malicious SQL code directly through these input fields.
The technical exploitation of this vulnerability follows a classic SQL injection attack pattern where attacker-controlled input is concatenated directly into SQL query strings without proper escaping or parameterization. When the application processes these parameters, the malformed SQL commands become part of the executed query, potentially allowing attackers to manipulate database operations, extract sensitive information, modify data, or even gain unauthorized access to underlying database systems. The vulnerability falls under CWE-89 which specifically addresses SQL injection flaws, and aligns with ATT&CK technique T1190 which covers exploitation of remote services through injection attacks. This type of vulnerability is particularly dangerous because it can be exploited remotely without requiring authentication, making it a prime target for automated scanning and exploitation tools commonly found in the threat landscape.
The operational impact of CVE-2006-6880 extends beyond simple data corruption or information disclosure. Successful exploitation can result in complete database compromise, leading to unauthorized data access, modification of guestbook entries, potential privilege escalation, and in severe cases, full system compromise if the database user has elevated privileges. The vulnerability affects any system running PHP-Update 2.7 or earlier versions, particularly those implementing guestbook or comment management features. Organizations using this software are at risk of data breaches, reputational damage, and potential regulatory compliance violations. The attack surface is broad since these parameters are likely exposed through web forms that are publicly accessible, making the vulnerability particularly attractive to automated exploitation frameworks. The impact is compounded by the fact that SQL injection vulnerabilities of this nature often remain undetected for extended periods, allowing attackers to maintain persistent access to compromised systems.
Mitigation strategies for CVE-2006-6880 should focus on immediate remediation through software updates to PHP-Update versions 2.8 or later where the vulnerability has been addressed. Organizations should implement proper input validation and sanitization techniques, including parameterized queries or prepared statements to prevent SQL injection attacks. The implementation of web application firewalls can provide additional protection layers, while regular security audits and code reviews should be conducted to identify similar vulnerabilities in other application components. Network segmentation and least privilege access controls can limit the potential damage from successful exploitation. Security patches should be applied immediately, as this vulnerability has been known for over a decade and multiple exploitation methods have been documented in security research publications. The vulnerability serves as a critical reminder of the importance of keeping software updated and implementing proper input validation practices as outlined in OWASP Top Ten security guidelines.