CVE-2009-0868 in Jasmine2000
Summary
by MITRE
CRLF injection vulnerability in the WebLink template in Fujitsu Jasmine2000 Enterprise Edition 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 • 08/04/2021
The vulnerability identified as CVE-2009-0868 represents a critical CRLF injection flaw within the WebLink template component of Fujitsu Jasmine2000 Enterprise Edition. This issue falls under the CWE-113 category for Improper Neutralization of CRLF Sequences in HTTP Headers, which specifically addresses the failure to properly sanitize input data that could contain carriage return line feed sequences. The vulnerability exists in the web application framework's handling of user-supplied data within template processing mechanisms, creating a pathway for malicious actors to manipulate HTTP responses through carefully crafted input sequences.
The technical exploitation of this vulnerability occurs when the WebLink template fails to adequately sanitize user input before incorporating it into HTTP headers during response generation. Attackers can inject arbitrary CRLF sequences that allow them to split the HTTP response into multiple parts, enabling them to inject malicious headers and potentially redirect users to malicious sites or execute cross-site scripting attacks. The unspecified vectors suggest that the vulnerability could be triggered through various input points within the template system, including but not limited to form submissions, URL parameters, or cookie values that are processed through the WebLink template engine.
The operational impact of this vulnerability extends beyond simple header injection, as it enables sophisticated attack vectors including session hijacking, cache poisoning, and cross-site request forgery exploitation. When combined with other vulnerabilities or attack techniques, this CRLF injection flaw can facilitate more severe consequences such as complete session takeover or data exfiltration. The vulnerability affects the integrity and confidentiality of web applications by allowing unauthorized manipulation of HTTP responses, which can compromise user authentication and data protection mechanisms. According to ATT&CK framework, this vulnerability maps to T1566.001 for Phishing and T1071.001 for Application Layer Protocol, as it enables attackers to manipulate web application responses and potentially redirect users to malicious resources.
Organizations utilizing Fujitsu Jasmine2000 Enterprise Edition must implement comprehensive mitigations including input validation and sanitization of all user-supplied data before template processing, proper encoding of output data, and regular security updates from Fujitsu. The implementation of web application firewalls and security monitoring systems can help detect and prevent exploitation attempts. Additionally, developers should follow secure coding practices that explicitly validate and sanitize all data entering the template processing pipeline, ensuring that CRLF sequences are properly escaped or removed from user input before being incorporated into HTTP headers. The vulnerability underscores the importance of proper HTTP header handling and response construction in enterprise web applications, as it demonstrates how template-based processing can introduce security flaws that affect the entire application security posture.