CVE-2017-2674 in JBoss BRMS
Summary
by MITRE
JBoss BRMS 6 and BPM Suite 6 before 6.4.3 are vulnerable to a stored XSS via several lists in Business Central. The flaw is due to lack of sanitation of user input when creating new lists. Remote, authenticated attackers that have privileges to create lists can store scripts in them, which are not properly sanitized before showing to other users, including admins.
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Analysis
by VulDB Data Team • 04/27/2023
The vulnerability identified as CVE-2017-2674 affects JBoss BRMS 6 and BPM Suite 6 versions prior to 6.4.3, representing a critical stored cross-site scripting flaw within the Business Central component. This vulnerability stems from insufficient input sanitization mechanisms when users create new lists within the business process management environment. The flaw exists specifically in the user interface elements that handle list creation and display operations, creating a persistent security weakness that can be exploited by malicious actors with appropriate privileges.
The technical implementation of this vulnerability occurs when authenticated users with sufficient permissions attempt to create lists within the Business Central interface. The system fails to properly sanitize user-supplied input before storing it in the database or application memory, allowing malicious scripts to be embedded within list content. When other users, including administrative accounts, view these lists, the stored scripts execute in their browser context without proper validation or escaping, enabling the exploitation of stored XSS attacks. This particular flaw demonstrates a classic lack of input validation and output encoding that violates fundamental web security principles and aligns with CWE-79 which specifically addresses cross-site scripting vulnerabilities.
The operational impact of CVE-2017-2674 extends beyond simple data theft or defacement, as it provides attackers with the capability to execute arbitrary code within the context of authenticated user sessions. Administrators who view the malicious lists become compromised, potentially allowing attackers to escalate privileges, access sensitive business processes, or extract confidential information from the business central environment. The vulnerability is particularly dangerous because it requires minimal privileges to exploit - only the ability to create lists within the system, which many business users may possess. This makes the attack surface significantly broader than typical XSS vulnerabilities that require more specialized access rights.
From a threat modeling perspective, this vulnerability maps directly to several ATT&CK techniques including T1059.001 for command and scripting interpreter and T1566.001 for spearphishing via social engineering, as attackers can use the stored XSS to redirect victims to malicious payloads or harvest session cookies. The vulnerability also aligns with ATT&CK technique T1078 for valid accounts, as successful exploitation can lead to privilege escalation through session hijacking. Organizations should implement comprehensive input validation and output encoding mechanisms as mitigation strategies, including proper HTML escaping of user content, Content Security Policy implementations, and regular security updates to patch affected versions. The vulnerability underscores the critical importance of sanitizing all user inputs in web applications, particularly in enterprise business management systems where administrative access is common. Organizations running affected versions should immediately upgrade to 6.4.3 or later, implement additional monitoring for suspicious list creation activities, and conduct thorough security assessments of their business central environments to identify any potential exploitation attempts.