CVE-2007-5572 in SPHPBlog
Summary
by MITRE
Multiple cross-site request forgery (CSRF) vulnerabilities in Simple PHP Blog (SPHPBlog) 0.4.9 allow remote attackers to perform delete actions as administrators via (1) the block_id parameter to add_block.php or (2) the link_id parameter to add_link.php.
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Analysis
by VulDB Data Team • 09/10/2018
The CVE-2007-5572 vulnerability affects Simple PHP Blog version 0.4.9 and represents a critical cross-site request forgery flaw that enables remote attackers to execute administrative actions without proper authorization. This vulnerability stems from insufficient input validation and authentication checks within the web application's parameter handling mechanisms. The flaw specifically manifests in two distinct attack vectors where malicious actors can manipulate the block_id parameter in add_block.php and the link_id parameter in add_link.php to perform unauthorized deletion operations. These vulnerabilities fall under the CWE-352 category of Cross-Site Request Forgery, which is classified as a fundamental web application security weakness that allows attackers to perform actions on behalf of authenticated users.
The technical implementation of this vulnerability exploits the lack of proper CSRF token validation within the affected PHP scripts. When administrators interact with the blog management interface, the application fails to verify that requests originate from legitimate administrative sessions rather than crafted malicious requests. Attackers can construct specially formatted requests that leverage the administrator's authenticated session to delete blog blocks or links, effectively compromising the integrity and availability of the blog content. The vulnerability demonstrates poor input sanitization practices where user-supplied parameters are directly processed without adequate verification of request legitimacy. This weakness creates a pathway for privilege escalation attacks where unauthenticated or low-privileged users can gain administrative capabilities through crafted HTTP requests.
The operational impact of this vulnerability extends beyond simple data deletion, as it represents a serious compromise of the application's security model and user trust. An attacker exploiting this vulnerability can systematically remove blog content, potentially causing data loss and service disruption. The ability to perform administrative actions without proper authentication undermines the entire access control mechanism of the Simple PHP Blog application. This vulnerability also enables further attack vectors such as content manipulation, user account compromise, and potential escalation to full system control if the application has additional administrative functionalities. The widespread nature of such vulnerabilities in legacy web applications makes them particularly dangerous as they can be exploited by automated tools and bots, amplifying their impact across multiple installations.
Organizations should implement comprehensive mitigation strategies to address this vulnerability, starting with immediate patching of the Simple PHP Blog application to version 0.4.10 or later where the CSRF protections have been properly implemented. The solution involves implementing proper CSRF token generation and validation mechanisms within the affected PHP scripts, ensuring that all administrative actions require valid session tokens before execution. Security headers such as Content Security Policy and SameSite cookie attributes should be configured to provide additional protection against cross-site request forgery attacks. The implementation should follow established security frameworks like the OWASP Top Ten and NIST cybersecurity guidelines for web application security. Additionally, regular security assessments and input validation procedures should be established to prevent similar vulnerabilities from emerging in future development cycles. Organizations should also consider implementing web application firewalls and monitoring systems to detect and prevent exploitation attempts of known CSRF vulnerabilities.