CVE-2020-4933 in Jazz Reporting Service
Summary
by MITRE • 02/18/2021
IBM Jazz Reporting Service 6.0.6.1, 7.0, 7.0.1, and 7.0.2 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 191751.
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Analysis
by VulDB Data Team • 03/03/2021
The vulnerability identified as CVE-2020-4933 affects IBM Jazz Reporting Service versions 6.0.6.1, 7.0, 7.0.1, and 7.0.2, representing a critical cross-site scripting flaw that compromises the security integrity of the web-based reporting interface. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically manifesting as a reflected XSS attack vector that enables malicious actors to inject executable JavaScript code into the application's web user interface. The flaw exists due to insufficient input validation and output encoding mechanisms within the reporting service's web components, allowing attackers to manipulate parameters that are subsequently rendered without proper sanitization.
The operational impact of this vulnerability extends beyond simple functionality alteration, creating a significant risk for credential theft and session hijacking within trusted user environments. When authenticated users interact with maliciously crafted payloads through the vulnerable web interface, the embedded JavaScript code executes within their browser context, potentially capturing session cookies, login credentials, or other sensitive information. This attack vector represents a sophisticated threat that leverages the trust relationship between users and the application, enabling adversaries to exploit legitimate user sessions for unauthorized access. The vulnerability particularly affects enterprise environments where the Jazz Reporting Service is used for business-critical reporting functions, potentially exposing sensitive organizational data through credential compromise.
Security professionals should recognize this vulnerability as a prime example of how web application frameworks can be compromised through inadequate sanitization of user inputs. The attack surface is particularly concerning given that the vulnerability affects multiple versions of the IBM Jazz Reporting Service, indicating a persistent flaw in the application's input handling mechanisms. From an ATT&CK framework perspective, this vulnerability maps to T1531 (Credential Access) and T1071.001 (Application Layer Protocol: Web Protocols), as it enables adversaries to establish persistent access through compromised user sessions. Organizations utilizing this reporting service must implement immediate mitigations including input validation, output encoding, and proper content security policies to prevent exploitation of this XSS vulnerability.
Mitigation strategies should encompass both immediate defensive measures and long-term architectural improvements to prevent similar vulnerabilities. Organizations should deploy web application firewalls with XSS detection capabilities, implement comprehensive input validation routines that sanitize all user-supplied data, and enforce strict output encoding practices for all dynamic content. Additionally, the implementation of Content Security Policy headers can significantly reduce the impact of successful XSS attempts by restricting script execution within the application environment. Regular security assessments and penetration testing should be conducted to identify potential XSS vulnerabilities in similar web applications, while code reviews should focus on input handling and output rendering processes. The vulnerability also underscores the importance of timely patch management and vendor security advisories, as IBM has likely released patches addressing this specific XSS flaw in subsequent versions of the Jazz Reporting Service.