CVE-2014-2017 in eShop
Summary
by MITRE
CRLF injection vulnerability in OXID eShop Professional Edition before 4.7.11 and 4.8.x before 4.8.4, Enterprise Edition before 5.0.11 and 5.1.x before 5.1.4, and Community Edition before 4.7.11 and 4.8.x before 4.8.4 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors.
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Analysis
by VulDB Data Team • 03/16/2025
The CVE-2014-2017 vulnerability represents a critical CRLF injection flaw within the OXID eShop platform that affects multiple editions including Professional, Enterprise, and Community versions. This vulnerability stems from inadequate input validation mechanisms within the web application's header processing functionality, creating an exploitable condition where malicious actors can inject carriage return and line feed characters into HTTP headers. The flaw specifically manifests in versions prior to the mentioned patches, where the application fails to properly sanitize user-supplied data before incorporating it into HTTP response headers, thereby enabling attackers to manipulate the HTTP response structure. The vulnerability falls under CWE-113, which specifically addresses improper neutralization of CRLF characters in HTTP headers, making it a well-documented and serious security concern within web application security frameworks. This type of vulnerability is particularly dangerous as it can be leveraged for various malicious activities including session hijacking, cross-site scripting attacks, and cache poisoning operations.
The technical exploitation of this vulnerability occurs when an attacker can inject CRLF sequences into HTTP headers through unspecified input vectors within the OXID eShop application. These injection points typically involve user-controllable parameters such as cookies, URL parameters, or form fields that are not properly validated or sanitized before being used in HTTP header construction. When the application processes these malicious inputs, the injected CRLF characters allow attackers to split the HTTP response into multiple parts, enabling them to inject additional headers or manipulate the response content. The HTTP response splitting attack can be executed by inserting a sequence of characters that includes carriage return followed by line feed, which effectively creates a new HTTP header field or terminates the existing header section. This manipulation can be particularly devastating as it allows attackers to redirect users to malicious websites, steal session cookies, or inject malicious content into web pages that users visit.
The operational impact of CVE-2014-2017 extends far beyond simple data manipulation, as it fundamentally compromises the integrity of the web application's HTTP communication layer. Attackers can leverage this vulnerability to conduct sophisticated attacks such as cross-site scripting by injecting malicious JavaScript into HTTP headers, perform session fixation attacks by manipulating authentication cookies, or execute cache poisoning attacks that affect multiple users. The vulnerability also enables more advanced attack vectors such as HTTP header injection that can be combined with other techniques to create more complex and dangerous exploits. From an ATT&CK framework perspective, this vulnerability maps to T1189 - Drive-by Compromise and T1566 - Phishing, as attackers can use the header injection capabilities to redirect users to malicious sites or inject malicious content into legitimate web pages. The vulnerability's impact is particularly severe in e-commerce environments where session management and user authentication are critical components, as it can lead to unauthorized access to customer accounts and financial data breaches.
Mitigation strategies for CVE-2014-2017 should focus on implementing robust input validation and sanitization mechanisms throughout the OXID eShop application. The primary defense involves ensuring that all user-supplied data is properly validated and sanitized before being used in HTTP header construction, with special attention to removing or encoding CRLF characters that could be used for injection attacks. Organizations should implement proper header sanitization routines that filter out or escape potentially dangerous characters, particularly carriage return and line feed sequences. Additionally, the application should be updated to the patched versions mentioned in the vulnerability description, which include fixes specifically designed to address the CRLF injection vectors. Security monitoring should include detection of anomalous HTTP header patterns that might indicate injection attempts, and web application firewalls should be configured to block suspicious header content. The implementation of proper HTTP header management practices, including the use of secure header configuration and content security policies, can further reduce the attack surface. Organizations should also conduct regular security assessments and penetration testing to identify and remediate similar vulnerabilities in their web applications, ensuring compliance with security standards such as OWASP Top Ten and NIST cybersecurity frameworks.