CVE-2024-37173 in CRM WebClient UI
Summary
by MITRE • 07/09/2024
Due to insufficient input validation, SAP CRM WebClient UI allows an unauthenticated attacker to craft a URL link which embeds a malicious script. When a victim clicks on this link, the script will be executed in the victim's browser giving the attacker the ability to access and/or modify information with no effect on availability of the application.
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Analysis
by VulDB Data Team • 03/20/2025
This vulnerability resides within SAP CRM WebClient UI where inadequate input validation creates a persistent cross-site scripting flaw that enables attackers to execute malicious code within victim browsers. The vulnerability specifically manifests when users click on crafted URL links that contain embedded scripts, allowing unauthorized individuals to exploit this weakness without requiring authentication credentials. The flaw operates through the web client interface's failure to properly sanitize user-supplied input parameters, creating an attack surface where malicious payloads can be injected and subsequently executed in the context of the victim's browsing session.
The technical implementation of this vulnerability aligns with CWE-79 which describes cross-site scripting vulnerabilities occurring when web applications fail to validate or escape user-provided data before incorporating it into dynamic content. This weakness enables attackers to inject client-side scripts into web pages viewed by other users, fundamentally compromising the integrity of the web application's security model. The vulnerability operates at the application layer where user input flows directly into the web response without adequate sanitization or encoding mechanisms, making it particularly dangerous as it can be leveraged by attackers to bypass standard authentication and authorization controls.
From an operational impact perspective, this vulnerability allows attackers to perform unauthorized actions within the victim's browser context, potentially enabling data theft, session hijacking, or modification of sensitive information. The attack vector requires minimal privileges since it operates without authentication, making it particularly attractive to threat actors seeking to exploit user sessions. While the vulnerability does not directly impact application availability, it creates significant risks for data confidentiality and integrity, potentially allowing attackers to access customer information, modify CRM records, or execute unauthorized transactions within the SAP CRM environment. The lack of availability impact means the application remains functional but the data within it becomes compromised.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms to prevent malicious script injection. Organizations should deploy web application firewalls and content security policies to detect and block suspicious script payloads. SAP recommends applying the latest security patches and updates to address this vulnerability while implementing proper input sanitization controls within the web client interface. Security teams should also conduct regular vulnerability assessments and penetration testing to identify similar weaknesses in the SAP CRM environment. The implementation of CSP headers and proper HTML escaping mechanisms can significantly reduce the attack surface, while user education and awareness programs can help prevent accidental clicking of malicious links. Additionally, monitoring for unusual URL patterns and implementing strict access controls can provide additional layers of defense against exploitation attempts.