CVE-2000-0435 in Allmanage
Summary
by MITRE
The allmanageup.pl file upload CGI script in the Allmanage Website administration software 2.6 can be called directly by remote attackers, which allows them to modify user accounts or web pages.
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Analysis
by VulDB Data Team • 10/14/2025
The vulnerability identified as CVE-2000-0435 represents a critical security flaw in the Allmanage Website administration software version 2.6, specifically within the allmanageup.pl file upload CGI script. This vulnerability stems from inadequate input validation and access control mechanisms that permit unauthorized remote execution of file upload operations. The flaw exists at the application level where the CGI script fails to properly authenticate or authorize remote attackers attempting to interact with the file upload functionality, creating an avenue for malicious actors to manipulate the web application's user accounts and content management systems. The vulnerability is classified under CWE-20 as a weakness involving improper input validation, which directly enables arbitrary code execution and unauthorized access to administrative functions. From an operational perspective, this vulnerability allows remote attackers to escalate privileges and gain unauthorized control over user accounts, effectively compromising the integrity and confidentiality of the web application's user data. The impact extends beyond simple account modification to include potential complete system compromise, as attackers can upload malicious files that may execute arbitrary code on the server. This vulnerability directly maps to ATT&CK technique T1078 which covers legitimate credentials and T1203 which addresses exploit public-facing application, demonstrating how attackers can leverage this flaw to establish persistent access and manipulate web content. The security implications are severe as it enables attackers to modify web pages, potentially defacing websites or injecting malicious content that could affect all users accessing the compromised site.
The technical exploitation of CVE-2000-0435 occurs when remote attackers directly call the allmanageup.pl CGI script without proper authentication mechanisms in place. This script is designed to handle file uploads within the Allmanage Website administration environment, but the lack of proper authorization checks means that any remote user can invoke this functionality. The vulnerability typically manifests when the application does not properly validate the source of requests or implement access controls that would normally restrict such operations to authorized administrators only. Attackers can leverage this flaw by directly accessing the vulnerable CGI script through HTTP requests, bypassing normal authentication procedures and gaining access to functionality that should be restricted. The vulnerability is particularly dangerous because it operates at the web server level where file upload capabilities can be used to deploy malicious scripts or binaries that can further compromise the system. This type of vulnerability is categorized under the broader class of insecure direct object references as described in CWE-639, where the application fails to properly verify user permissions before allowing access to restricted functionality.
The operational impact of CVE-2000-0435 extends far beyond simple unauthorized access to user accounts. When exploited, this vulnerability can result in complete compromise of the web application's administrative capabilities, allowing attackers to modify or delete user accounts, alter web content, and potentially establish persistent backdoors within the system. The ability to modify web pages creates opportunities for defacement, data theft, and the injection of malicious content that could affect all users of the compromised website. Organizations using Allmanage Website administration software version 2.6 are particularly vulnerable as this flaw affects the core functionality of the platform, making it a prime target for exploitation. The vulnerability's persistence means that even after initial exploitation, attackers can maintain access to the system and continue to manipulate content or accounts over time. From a business continuity standpoint, this vulnerability can result in significant reputational damage, regulatory compliance issues, and potential financial losses due to compromised user data and system integrity. The vulnerability also creates opportunities for attackers to use the compromised system as a launching point for further attacks against other systems within the organization's network infrastructure.
Mitigation strategies for CVE-2000-0435 must address both immediate remediation and long-term security improvements. The primary recommendation involves implementing proper access controls and authentication mechanisms for all CGI scripts, ensuring that only authorized administrators can invoke file upload functionality. Organizations should restrict direct access to the allmanageup.pl script by implementing proper input validation, authentication checks, and authorization protocols that prevent unauthorized remote execution. Network-level protections such as firewalls and access control lists should be configured to limit access to administrative scripts and restrict access to the vulnerable CGI endpoints. The implementation of web application firewalls and intrusion detection systems can help monitor and block suspicious requests targeting the vulnerable script. Additionally, organizations should ensure that the Allmanage Website administration software is updated to the latest available version that addresses this vulnerability, as version 2.6 is known to contain this flaw and subsequent releases likely include proper security controls. Security hardening practices should include disabling unnecessary CGI scripts, implementing proper file upload restrictions, and establishing regular security audits to identify and remediate similar vulnerabilities. The remediation process should also include network segmentation to limit the impact of potential exploitation and establish monitoring protocols that can detect unauthorized access attempts to administrative functions. Regular security training for administrators and developers is essential to prevent similar issues in future implementations and to ensure proper understanding of secure coding practices.