CVE-2002-1960 in Share360
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Cybozu Share360 1.1 allows remote attackers to inject arbitrary web script or HTML via an HTML link.
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Analysis
by VulDB Data Team • 07/07/2024
The CVE-2002-1960 vulnerability represents a classic cross-site scripting flaw in Cybozu Share360 version 1.1, a document management and collaboration platform that was widely used in enterprise environments during the early 2000s. This vulnerability resides in the application's handling of user-provided input within HTML link parameters, creating a persistent security weakness that could be exploited by remote attackers to execute malicious scripts in the context of other users' browsers. The vulnerability specifically affects how the application processes HTML content within link structures, failing to properly sanitize or encode user-supplied data before rendering it in web pages. This type of flaw falls under the CWE-79 category of Cross-Site Scripting, which is classified as a critical security weakness in web applications that allows attackers to inject client-side scripts into web pages viewed by other users.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious HTML link containing embedded script code and shares it through the Cybozu Share360 platform. When other users click on this link or view pages containing the malicious content, the embedded scripts execute in their browsers with the privileges of the authenticated user session. This creates a severe operational impact as attackers can steal session cookies, perform unauthorized actions on behalf of users, redirect victims to malicious websites, or extract sensitive information from the application's user interface. The vulnerability demonstrates poor input validation and output encoding practices, where the application fails to implement proper sanitization mechanisms to prevent script execution in contexts where such code should be treated as data rather than executable content. This particular weakness aligns with ATT&CK technique T1566.001 which involves the use of malicious links to deliver payloads to victims.
The operational consequences of this vulnerability extend beyond simple script execution, as it enables attackers to establish persistent access patterns within compromised environments. An attacker could use this vulnerability to create a backdoor in the form of a persistent script that monitors user activities or collects information from the Share360 platform. The impact is particularly severe in enterprise settings where Share360 was used for sensitive document sharing and collaboration, as the vulnerability could lead to data breaches, unauthorized access to confidential information, and potential lateral movement within network environments. Organizations using this platform faced significant risk of credential theft and privilege escalation attacks, as the vulnerability could be exploited to capture user session tokens and impersonate legitimate users within the application. The vulnerability also demonstrates the critical importance of proper security controls in collaborative platforms and highlights the need for comprehensive input validation and output encoding practices that are essential for preventing XSS attacks in web applications.