CVE-2009-1453 in Tiny Blogr
Summary
by MITRE
SQL injection vulnerability in class.eport.php in Tiny Blogr 1.0.0 rc4, when magic_quotes_gpc is disabled, allows remote attackers to execute arbitrary SQL commands via the txtUsername parameter (aka the Username field). NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 11/27/2024
The vulnerability identified as CVE-2009-1453 represents a critical sql injection flaw within the Tiny Blogr 1.0.0 rc4 content management system. This vulnerability specifically affects the class.eport.php file and exploits a fundamental weakness in input validation mechanisms. The flaw occurs when the php configuration parameter magic_quotes_gpc is disabled, creating an environment where malicious input can bypass standard sanitization measures and directly manipulate database queries. The attack vector targets the txtUsername parameter, which corresponds to the Username field in the application's user interface, making it accessible through standard web form submissions.
The technical exploitation of this vulnerability stems from improper handling of user-supplied input within the sql query construction process. When magic_quotes_gpc is disabled, php does not automatically escape special characters in GET, POST, and COOKIE data, leaving the application susceptible to malicious input injection. Attackers can craft specially formatted usernames containing sql payload commands that get directly incorporated into database queries without proper sanitization. This allows unauthorized users to execute arbitrary sql commands on the underlying database system, potentially leading to complete database compromise, data exfiltration, or privilege escalation attacks.
The operational impact of this vulnerability extends beyond simple data theft, as it enables attackers to manipulate the entire database structure and content. Successful exploitation could result in unauthorized access to user credentials, modification of blog content, deletion of database records, or even the complete compromise of the web application's backend. The vulnerability affects the authentication and authorization mechanisms of Tiny Blogr, potentially allowing attackers to gain administrative privileges or impersonate legitimate users. This represents a severe security risk for any organization relying on this version of the blog platform, particularly in environments where database access is not properly restricted.
Mitigation strategies for this vulnerability involve multiple layers of defensive measures. The primary recommendation is to enable magic_quotes_gpc or implement proper input sanitization and parameterized queries throughout the application codebase. Organizations should also consider upgrading to a patched version of Tiny Blogr if available, as this vulnerability was likely addressed in subsequent releases. Additional protective measures include implementing web application firewalls, conducting regular security code reviews, and establishing proper database access controls with least privilege principles. From a compliance perspective, this vulnerability aligns with CWE-89 sql injection weaknesses and may be categorized under ATT&CK technique T1190 for exploitation of vulnerable web applications, highlighting the need for comprehensive application security testing and vulnerability management programs.