CVE-2006-3105 in Bitweaver
Summary
by MITRE
CRLF injection vulnerability in Bitweaver 1.3 allows remote attackers to conduct HTTP response splitting attacks by via CRLF sequences in multiple unspecified parameters that are injected into HTTP headers, as demonstrated by the BWSESSION parameter in index.php.
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Analysis
by VulDB Data Team • 07/29/2025
The CVE-2006-3105 vulnerability represents a critical CRLF injection flaw discovered in Bitweaver version 1.3, a content management system that was widely used for web publishing and collaboration platforms. This vulnerability specifically targets the application's handling of user input within HTTP headers, creating a pathway for remote attackers to manipulate web server responses. The flaw manifests when CRLF (Carriage Return Line Feed) sequences are improperly processed in multiple unspecified parameters, allowing malicious actors to inject arbitrary HTTP headers into the server's response. The vulnerability is particularly concerning because it enables HTTP response splitting attacks, which can lead to various downstream security issues including cross-site scripting, session hijacking, and cache poisoning. The BWSESSION parameter in index.php serves as a primary attack vector, demonstrating how seemingly innocuous session management elements can become gateways for sophisticated attacks.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within Bitweaver's core components. When user-supplied data containing CRLF sequences is processed without proper encoding or filtering, the application fails to distinguish between legitimate header data and malicious injection attempts. This creates a condition where attackers can inject additional HTTP headers, effectively splitting the original response into multiple responses that can be manipulated to redirect users or inject malicious content. The vulnerability is classified under CWE-113, which specifically addresses "Improper Neutralization of CRLF Sequences in HTTP Headers," making it a direct descendant of well-known header injection patterns. The attack vector operates at the application layer, specifically targeting HTTP header processing mechanisms that are fundamental to web server communication protocols.
The operational impact of this vulnerability extends beyond simple data manipulation, as HTTP response splitting can enable complex attack chains that compromise user sessions and web application integrity. An attacker exploiting this vulnerability can potentially redirect users to malicious sites, steal session cookies, or inject content that appears legitimate to users. The attack requires minimal privileges since it operates entirely over HTTP protocols without requiring authentication or local system access. This makes the vulnerability particularly dangerous in environments where Bitweaver is deployed without additional security measures such as web application firewalls or proper input validation. The vulnerability also demonstrates how legacy applications may contain fundamental security flaws that persist across versions, highlighting the importance of regular security assessments and code reviews.
Mitigation strategies for CVE-2006-3105 should focus on implementing robust input validation and sanitization mechanisms throughout the application. Organizations should ensure all user-supplied data is properly encoded before being used in HTTP headers, with special attention to CRLF sequences and other potentially dangerous characters. The implementation of proper header validation routines and the use of secure coding practices can prevent the injection of malicious content into HTTP responses. Additionally, deployment of web application firewalls and intrusion detection systems can provide an additional layer of protection against such attacks. According to ATT&CK framework category T1190, this vulnerability aligns with the "Exploit Public-Facing Application" technique, emphasizing the need for comprehensive application security measures. Regular security updates and patches should be implemented immediately, as Bitweaver 1.3 is an outdated version that no longer receives security support. Organizations should also consider implementing proper session management techniques, such as secure cookie attributes and regeneration of session identifiers, to minimize the potential impact of session-related attacks that may exploit this vulnerability.