CVE-2015-0905 in bBlog
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in bBlog allows remote attackers to hijack the authentication of arbitrary users.
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Analysis
by VulDB Data Team • 05/02/2022
The CVE-2015-0905 vulnerability represents a critical cross-site request forgery flaw within the bBlog content management system that enables remote attackers to exploit user sessions and execute unauthorized actions. This vulnerability falls under the common weakness enumeration CWE-352, which specifically addresses Cross-Site Request Forgery vulnerabilities in web applications. The flaw exists in the authentication handling mechanisms of bBlog, where the system fails to properly validate the origin of requests, allowing malicious actors to craft specially crafted requests that appear to originate from legitimate authenticated users. The vulnerability is particularly dangerous because it can be exploited without requiring any prior authentication credentials from the attacker, making it a significant threat to user accounts and system integrity.
The technical implementation of this CSRF vulnerability stems from the absence of proper request validation tokens or origin checking mechanisms within bBlog's web application framework. When users authenticate to the system, their session cookies are automatically included with every request, but the application does not verify whether the request originates from the legitimate user interface or from a malicious third-party website. Attackers can leverage this weakness by embedding malicious links or forms within their own websites that, when clicked by authenticated users, automatically submit requests to the vulnerable bBlog instance. These requests can perform actions such as changing user passwords, modifying content, or executing administrative functions, all while appearing to come from the legitimate user's browser session.
The operational impact of this vulnerability extends beyond simple account compromise, as it can lead to complete system takeover and unauthorized data manipulation. An attacker who successfully exploits this CSRF vulnerability can hijack user sessions and perform operations that may include deleting critical content, modifying user permissions, or even installing malicious code within the bBlog environment. This type of attack aligns with the attack technique T1566 in the MITRE ATT&CK framework, specifically targeting credential access through manipulation of web application requests. The vulnerability also represents a significant risk to organizations relying on bBlog for content management, as it can result in data breaches, content tampering, and potential regulatory compliance violations depending on the nature of the information handled by the affected systems.
Mitigation strategies for CVE-2015-0905 should focus on implementing robust CSRF protection mechanisms within the bBlog application. The most effective approach involves deploying anti-CSRF tokens that are generated per user session and validated with every state-changing request. These tokens should be cryptographically secure and tied to the user's session to prevent attackers from crafting valid requests. Additionally, implementing proper origin checking and referer header validation can provide additional layers of protection. Organizations should also consider upgrading to newer versions of bBlog that have addressed this vulnerability or applying security patches immediately. The implementation of Content Security Policy headers and proper session management practices can further reduce the attack surface and protect against similar vulnerabilities in the future. Security monitoring should include detection of unusual request patterns that may indicate CSRF attack attempts, and regular security audits should verify that CSRF protection mechanisms remain effective against evolving attack vectors.