CVE-2020-6201 in Commerce
Summary
by MITRE
The SAP Commerce (Testweb Extension), versions- 6.6, 6.7, 1808, 1811, 1905, does not sufficiently encode user-controlled inputs, due to which certain GET URL parameters are reflected in the HTTP responses without escaping/sanitization, leading to Reflected Cross Site Scripting.
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Analysis
by VulDB Data Team • 05/10/2025
The vulnerability identified as CVE-2020-6201 affects SAP Commerce platforms running specific versions including 6.6, 6.7, 1808, 1811, and 1905. This issue resides within the Testweb Extension component of the SAP Commerce suite, which serves as a testing framework for developers and administrators. The flaw represents a critical security weakness that allows malicious actors to inject arbitrary JavaScript code into web responses through improperly handled URL parameters. The vulnerability stems from insufficient input validation and output encoding mechanisms that fail to sanitize user-supplied data before incorporating it into HTTP responses.
The technical implementation of this vulnerability occurs when the Testweb Extension processes GET requests containing user-controlled parameters. When these parameters are reflected back in the HTTP response without proper HTML entity encoding or sanitization, attackers can craft malicious URLs that, when executed, cause browsers to interpret and execute injected script code. This reflective XSS vulnerability operates by leveraging the web application's failure to properly escape special characters in user input, allowing script tags, event handlers, or other malicious code to be executed in the context of the victim's browser session. The vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws where input is not properly sanitized before being reflected back to users.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform various malicious activities including session hijacking, credential theft, and data exfiltration. An attacker could craft a URL containing malicious JavaScript that would execute in a victim's browser when the victim clicks on a phishing link or visits a compromised website. The reflected nature of this vulnerability means that the attack payload is delivered through the web application itself, making it particularly dangerous as it can be easily concealed within legitimate-looking URLs. This vulnerability could allow attackers to steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users within the SAP Commerce environment. The attack vector aligns with ATT&CK technique T1566 which covers phishing and social engineering attacks that leverage web-based vulnerabilities.
Mitigation strategies for CVE-2020-6201 should focus on implementing proper input validation and output encoding mechanisms throughout the Testweb Extension. Organizations should ensure that all user-supplied input is sanitized and encoded before being reflected in HTTP responses, particularly for URL parameters used in GET requests. The recommended approach involves implementing comprehensive parameter validation that strips or encodes special characters such as angle brackets, quotes, and script tags. Security patches provided by SAP should be applied immediately, as these releases contain fixes specifically designed to address the insufficient encoding of user-controlled inputs. Additionally, organizations should implement web application firewalls and content security policies to provide additional layers of protection against reflected XSS attacks. Regular security testing and code reviews should be conducted to identify similar vulnerabilities in other components of the SAP Commerce platform, ensuring that all input handling mechanisms properly sanitize user data before processing or returning it to client applications.