CVE-2006-0844 in Web Blog
Summary
by MITRE
Leif M. Wright s Blog 3.5 does not make a password comparison when authenticating an administrator via a cookie, which allows remote attackers to bypass login authentication, probably by setting the blogAdmin cookie.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 06/20/2024
The vulnerability described in CVE-2006-0844 represents a critical authentication bypass flaw in Leif M. Wright s Blog version 3.5 that fundamentally undermines the security of administrative access controls. This issue stems from a design flaw in the cookie-based authentication mechanism where the application fails to properly validate password credentials during the administrative login process. The vulnerability specifically affects the authentication routine that handles administrator sessions through cookie mechanisms, creating a pathway for unauthorized access that bypasses normal security controls.
The technical implementation of this flaw demonstrates a failure in cryptographic verification processes where the system accepts administrative cookies without performing the necessary password comparison checks that should occur during authentication. This weakness creates a condition where an attacker can manipulate the blogAdmin cookie value to gain administrative privileges without possessing valid credentials. The vulnerability operates at the application logic level, specifically within the authentication module, and represents a classic case of improper authentication handling that violates fundamental security principles. According to CWE classification, this corresponds to CWE-287 which addresses improper authentication issues in software applications.
The operational impact of this vulnerability extends beyond simple unauthorized access as it provides attackers with complete administrative control over the blog system. This includes the ability to modify content, manage user accounts, alter system configurations, and potentially access sensitive data stored within the application. The remote nature of the attack means that an adversary does not require physical access to the system or network, making the vulnerability particularly dangerous in environments where the blog is publicly accessible. Attackers can exploit this flaw by simply setting or modifying the blogAdmin cookie value to gain unrestricted administrative privileges, effectively rendering the authentication system useless.
The security implications of this vulnerability align with ATT&CK technique T1078 which covers valid accounts and credential access, as the flaw allows attackers to leverage administrative cookies without proper authorization. Organizations using affected versions of the blog software face significant risks including data compromise, service disruption, and potential lateral movement within their network infrastructure. The vulnerability also demonstrates poor security design practices that could expose other components of the system to similar attacks, particularly if the same cookie handling mechanisms are used elsewhere in the application. Remediation efforts should focus on implementing proper password verification procedures during cookie validation, ensuring that all administrative authentication attempts undergo complete credential verification before granting access privileges.
Mitigation strategies for this vulnerability require immediate implementation of secure cookie handling mechanisms that enforce proper authentication checks before granting administrative access. System administrators should update to patched versions of the blogging software or implement custom fixes that ensure password comparison occurs during cookie validation. Additional protective measures include implementing secure session management practices, using secure and HttpOnly flags for cookies, and monitoring for unauthorized cookie modifications. The vulnerability serves as a reminder of the critical importance of proper authentication implementation and the potential consequences of failing to validate credentials during session restoration processes. Organizations should conduct comprehensive security assessments to identify similar issues in other applications and ensure that all authentication mechanisms properly validate credentials before granting access privileges.