CVE-2007-0526 in Bitweaver
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Bitweaver 1.3.1 allow remote attackers to inject arbitrary web script or HTML via the URL (PATH_INFO) to (1) articles/edit.php, (2) articles/list.php, (3) blogs/list_blogs.php, or (4) blogs/rankings.php.
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Analysis
by VulDB Data Team • 08/08/2017
The vulnerability identified as CVE-2007-0526 represents a critical cross-site scripting weakness affecting Bitweaver version 1.3.1, specifically targeting four distinct PHP script endpoints within the content management system. This vulnerability stems from inadequate input validation and sanitization of user-supplied data that flows through the PATH_INFO component of web requests, creating an attack surface where malicious actors can inject arbitrary HTML and JavaScript code into the application's response. The affected files articles/edit.php, articles/list.php, blogs/list_blogs.php, and blogs/rankings.php all process URL parameters without proper sanitization, allowing attackers to execute malicious scripts in the context of other users' browsers who visit compromised pages.
The technical exploitation of this vulnerability occurs through manipulation of the PATH_INFO portion of URLs, which is typically used by web servers to pass additional path information to PHP scripts. When Bitweaver processes these unvalidated parameters, it fails to properly escape or filter the input before rendering it in HTML output contexts, creating a classic XSS vector. The vulnerability classifies under CWE-79 as "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", specifically manifesting as reflected XSS where the malicious payload is embedded in the URL and executed when the victim's browser processes the response. This allows attackers to perform actions such as stealing session cookies, defacing web pages, redirecting users to malicious sites, or executing unauthorized commands on behalf of authenticated users.
The operational impact of this vulnerability extends beyond simple data theft, as it can enable attackers to establish persistent malicious presence within the Bitweaver application environment. Successful exploitation could lead to complete compromise of user accounts, unauthorized content modification, data exfiltration, and potential privilege escalation within the CMS. The reflected nature of the vulnerability means that attacks can be delivered through phishing emails, compromised links, or social engineering tactics, making them particularly dangerous as they require minimal user interaction beyond visiting a malicious URL. Attackers can leverage this vulnerability to create backdoors, harvest sensitive information, or use the compromised system as a launch point for further attacks against the broader network infrastructure.
Organizations using Bitweaver 1.3.1 should immediately implement multiple layers of defense to mitigate this vulnerability. The primary remediation involves implementing proper input validation and output encoding across all affected PHP endpoints, ensuring that all user-supplied data passing through PATH_INFO is sanitized before being rendered in HTML contexts. This aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments and T1584.002 for establishing backdoors through web application vulnerabilities. Additional mitigations include implementing Content Security Policy headers to restrict script execution, deploying web application firewalls to detect and block malicious requests, and conducting comprehensive security audits of all web application inputs and outputs. The vulnerability also highlights the importance of regular security patching and vulnerability assessment programs to identify similar weaknesses in other application components, as the affected system's architecture suggests potential for similar issues in other file processing functions.