CVE-2018-16778 in Jenzabar
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Jenzabar v8.2.1 through 9.2.0 allows remote attackers to inject arbitrary web script or HTML via the query parameter (aka the Search Field).
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Analysis
by VulDB Data Team • 04/23/2020
This cross-site scripting vulnerability exists within Jenzabar software versions 8.2.1 through 9.2.0, representing a critical security flaw that enables remote attackers to execute malicious web scripts or HTML code within the context of affected user sessions. The vulnerability specifically manifests through improper input validation of query parameters, commonly referred to as the Search Field functionality within the application. This weakness falls under the CWE-79 category of Cross-site Scripting, which is a fundamental web application security vulnerability that allows attackers to inject client-side scripts into web pages viewed by other users. The attack vector is particularly concerning as it leverages the search functionality that is typically accessible to all users, making exploitation relatively straightforward and widespread.
The technical implementation of this vulnerability stems from insufficient sanitization and encoding of user-supplied input before it is rendered in web responses. When users enter search queries containing malicious script code, the application fails to properly escape or validate these inputs, allowing the injected content to execute within the victim's browser context. This creates a persistent threat where any user interacting with the search functionality could potentially be compromised, as the malicious scripts would execute in the security context of the authenticated user. The vulnerability is classified as a reflected XSS attack pattern, though it could potentially evolve into a stored XSS scenario if the malicious input is subsequently stored and displayed without proper sanitization. The impact extends beyond simple script execution to potentially enable session hijacking, credential theft, and further attack escalation.
The operational impact of this vulnerability is significant across multiple attack scenarios that align with the ATT&CK framework's initial access and execution phases. Attackers can leverage this vulnerability to perform session fixation attacks, steal sensitive information through cookie manipulation, or redirect users to malicious domains. The vulnerability affects the entire user base of affected Jenzabar installations, creating a potential attack surface that could be exploited across various organizational environments including educational institutions, enterprises, and government agencies that rely on the platform. The persistence of this vulnerability across multiple minor versions suggests a fundamental flaw in the input validation architecture that requires immediate attention and remediation efforts.
Organizations should implement immediate mitigations including input validation and output encoding mechanisms to prevent script injection attacks. The most effective approaches involve implementing proper HTML escaping of all user inputs before rendering them in web responses, utilizing Content Security Policy headers to restrict script execution, and implementing proper input sanitization routines. Additionally, organizations should consider deploying web application firewalls to detect and block malicious payloads targeting the search functionality. The remediation strategy should include immediate patching of affected Jenzabar versions, with security teams monitoring for any exploitation attempts through log analysis and network traffic inspection. Regular security assessments of web applications should include comprehensive testing of search and input fields to identify similar vulnerabilities that may exist in other application components.