CVE-2006-2771 in hogstorp guestbook
Summary
by MITRE
admin/radera/tabort.asp in Hogstorps hogstorp guestbook 2.0 does not verify user credentials, which allows remote attackers to delete arbitrary posts via a modified delID parameter.
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Analysis
by VulDB Data Team • 10/05/2024
The vulnerability identified as CVE-2006-2771 affects the Hogstorps Hogstorp Guestbook version 2.0, specifically within the administrative deletion functionality located at admin/radera/tabort.asp. This flaw represents a critical authorization bypass vulnerability that undermines the security controls designed to protect guestbook content. The vulnerability stems from insufficient input validation and authentication verification within the administrative interface, creating a pathway for unauthorized users to manipulate the system through crafted HTTP requests. The affected component processes a delID parameter that controls which posts can be deleted, but fails to properly validate whether the requesting user possesses the necessary administrative privileges before executing the deletion operation.
The technical nature of this vulnerability aligns with CWE-285, which addresses improper authorization issues in software systems. Attackers can exploit this weakness by directly manipulating the delID parameter in their requests to the target system, effectively bypassing the normal authentication and authorization mechanisms that should prevent unauthorized deletion of guestbook entries. This type of vulnerability falls under the ATT&CK framework's privilege escalation and defense evasion techniques, as it allows attackers to perform administrative actions without proper credentials. The flaw demonstrates a classic lack of input sanitization and access control validation that has been commonly observed in web applications lacking proper security controls. The vulnerability's impact is amplified by the fact that it operates entirely within the application's administrative interface, which typically requires elevated privileges to access.
Operationally, this vulnerability enables remote attackers to completely compromise the integrity of the guestbook system by deleting arbitrary posts without authentication. The implications extend beyond simple content removal, as this could be used to deface the guestbook, remove evidence of malicious activity, or disrupt the service entirely. The attack vector requires only basic web browsing capabilities and knowledge of the target application's structure, making it particularly dangerous as it can be exploited by attackers with minimal technical expertise. Organizations using this vulnerable version of the guestbook are at risk of having their public content manipulated, potentially leading to reputational damage and loss of user trust. The vulnerability also represents a significant security gap that could serve as a stepping stone for further attacks against the system or network.
Mitigation strategies for this vulnerability should focus on implementing proper authentication and authorization controls throughout the application's administrative functions. The system must validate user credentials and permissions before processing any administrative requests, including deletion operations. Input validation should be implemented to sanitize the delID parameter and ensure it contains only legitimate values that correspond to authorized administrative actions. Security patches or updates to the Hogstorp Guestbook software should be applied immediately to address this vulnerability, as the affected version is likely to contain additional security flaws. Organizations should also implement proper access controls and monitoring of administrative functions to detect unauthorized access attempts. The solution aligns with the principle of least privilege, ensuring that only authenticated administrative users can perform critical operations such as post deletion, and that all such operations are properly logged for security auditing purposes.