CVE-2008-1971 in phShoutBox Final
Summary
by MITRE
phShoutBox Final 1.5 and earlier only checks passwords when specified in $_POST, which allows remote attackers to gain privileges by setting the (1) phadmin cookie to admin.php, or (2) in 1.4 and earlier, the ssbadmin cookie to shoutadmin.php.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 10/21/2024
The vulnerability described in CVE-2008-1971 represents a critical authentication bypass flaw in the phShoutBox Final 1.5 content management system and its predecessor versions. This weakness stems from improper validation of administrative credentials within the application's authentication mechanism, creating a significant security risk for systems utilizing this software. The vulnerability specifically targets the method by which administrative privileges are verified, allowing unauthorized users to escalate their access level without proper authentication.
The technical implementation of this flaw demonstrates a classic case of insecure authentication handling where the system fails to properly validate administrative credentials across different execution paths. When the application processes administrative requests, it only validates passwords through the $_POST superglobal variable, which is typically used for form data submission. This selective validation creates a gap in the authentication process where cookies containing administrative session information can be manipulated without proper credential verification. The vulnerability manifests when attackers exploit this inconsistency by directly setting specific cookies to administrative URLs, bypassing the normal password validation flow entirely.
From an operational perspective, this vulnerability presents a severe risk to web applications running affected versions of phShoutBox. An attacker with minimal technical knowledge can exploit this flaw to gain full administrative control over the shoutbox system, potentially leading to complete compromise of the underlying web server or application. The impact extends beyond simple privilege escalation as administrators may be able to modify or delete content, access sensitive user data, manipulate application configuration, and potentially use the compromised system as a foothold for further attacks within the network. This vulnerability directly maps to CWE-287, which addresses improper authentication issues in software systems.
The attack vectors described in this vulnerability align with several techniques outlined in the MITRE ATT&CK framework, particularly focusing on privilege escalation and credential access phases. Attackers can leverage this weakness to move laterally within compromised environments by using the elevated privileges gained through cookie manipulation. The vulnerability's persistence across versions 1.4 and earlier demonstrates a long-standing flaw in the application's security design that was not adequately addressed in the development lifecycle. Organizations using vulnerable versions face potential exposure to data breaches, content tampering, and unauthorized modifications to their web applications.
Mitigation strategies for this vulnerability require immediate patching of the affected software to ensure proper authentication validation across all request methods. System administrators should implement proper cookie security measures including secure flags and HttpOnly attributes to prevent client-side manipulation of administrative cookies. Network segmentation and access control measures should be enforced to limit exposure of vulnerable applications to untrusted networks. Additionally, regular security assessments and code reviews should be conducted to identify similar authentication bypass vulnerabilities in other applications. The remediation process must include comprehensive testing to ensure that authentication mechanisms properly validate credentials regardless of the submission method used by attackers.