CVE-2020-12779 in iTop
Summary
by MITRE
Combodo iTop contains a stored Cross-site Scripting vulnerability, which can be attacked by uploading file with malicious script.
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Analysis
by VulDB Data Team • 11/07/2020
The vulnerability CVE-2020-12779 represents a critical stored cross-site scripting flaw within the Combodo iTop platform, a widely used IT service management solution. This vulnerability specifically manifests when the system processes file uploads that contain malicious script code, creating a persistent security risk that can affect multiple users simultaneously. The issue stems from inadequate input validation and output sanitization mechanisms within the file upload processing functionality, allowing attackers to inject malicious scripts that persist in the system's database and execute whenever affected pages are accessed. The stored nature of this vulnerability means that once malicious content is uploaded and processed, it remains active in the system until manually removed, potentially affecting all users who interact with the vulnerable application components.
The technical exploitation of this vulnerability follows a pattern consistent with CWE-79 - Improper Neutralization of Input During Web Page Generation, where user-supplied data is not properly sanitized before being rendered in web pages. Attackers can leverage this weakness by crafting malicious files containing javascript payloads that are uploaded through the iTop interface, typically through file attachment features or document management modules. These payloads can execute in the context of other users' browsers, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The vulnerability operates at the application layer and can be exploited through standard web application attack vectors, making it particularly dangerous as it requires minimal privileges to exploit and can affect legitimate users who simply browse the application interface.
The operational impact of CVE-2020-12779 extends beyond simple script execution, creating potential for significant security breaches within organizations relying on Combodo iTop for their IT service management needs. When exploited, the vulnerability can enable attackers to perform actions such as stealing user session cookies, executing arbitrary commands on behalf of authenticated users, or redirecting users to phishing sites designed to capture credentials. The persistent nature of stored XSS makes this vulnerability particularly dangerous in enterprise environments where iTop is used for managing critical infrastructure information, as attackers could gain access to sensitive data or manipulate system functionality. Organizations may experience unauthorized access to service requests, user accounts, or configuration data, potentially leading to service disruption and compliance violations. The vulnerability also aligns with ATT&CK technique T1566.001 - Phishing: Spearphishing Attachment, as attackers can use malicious file uploads to deliver payloads that compromise user sessions.
Mitigation strategies for CVE-2020-12779 should focus on implementing robust input validation and output encoding mechanisms within the iTop application. Organizations should immediately apply the vendor-provided security patches or updates that address this specific vulnerability, as Combodo has released fixes for this issue in subsequent versions of their platform. Additional protective measures include implementing strict file type validation and content scanning for uploaded files, enforcing proper access controls for file upload functionality, and implementing content security policies to prevent script execution in user-generated content. Security teams should also consider deploying web application firewalls that can detect and block malicious script patterns in file uploads, while conducting regular security assessments of the iTop environment to identify potential additional vulnerabilities. The remediation process should include thorough testing of the applied patches to ensure no regression in functionality while maintaining the security improvements necessary to protect against this stored XSS threat.