CVE-2007-6156 in Basic Analysis And Security Engine
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in base_qry_main.php in Base Analysis and Security Engine (BASE) before 1.3.9 allow remote attackers to inject arbitrary web script or HTML via the (1) sig[0] and (2) sig[1] parameters.
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Analysis
by VulDB Data Team • 11/09/2017
The vulnerability identified as CVE-2007-6156 represents a critical cross-site scripting weakness in the Base Analysis and Security Engine (BASE) software, specifically affecting versions prior to 1.3.9. This flaw resides within the base_qry_main.php component and demonstrates a classic input validation failure that enables malicious actors to execute arbitrary web scripts or HTML code within the context of affected user sessions. The vulnerability manifests through two distinct parameter injection points, namely sig[0] and sig[1], which are processed without adequate sanitization or output encoding, creating an exploitable attack surface that can be leveraged by remote threat actors.
The technical implementation of this vulnerability stems from insufficient validation of user-supplied input parameters within the BASE application's query processing mechanism. When the application receives data through the sig[0] and sig[1] parameters, it fails to properly sanitize or encode this input before incorporating it into dynamic web page content. This lack of input sanitization creates a direct pathway for attackers to inject malicious payloads that will be executed by unsuspecting users who view the affected web pages. The vulnerability operates under CWE-79, which specifically addresses cross-site scripting flaws, and aligns with the ATT&CK technique T1059.003 for command and scripting interpreter, as attackers can leverage this vulnerability to execute arbitrary code within user browsers.
The operational impact of this vulnerability extends beyond simple script injection, as it provides attackers with the capability to perform session hijacking, steal sensitive information, redirect users to malicious websites, or perform actions on behalf of authenticated users. In the context of security monitoring and analysis tools like BASE, which are designed to process and display security event data, this vulnerability creates a particularly dangerous scenario where an attacker could compromise the integrity of security information being presented to analysts. The attack vector is particularly concerning because it allows remote exploitation without requiring authentication, making it accessible to any attacker with network access to the vulnerable system. This vulnerability directly impacts the confidentiality, integrity, and availability of the security monitoring infrastructure, potentially allowing attackers to undermine the very security controls that the BASE application is designed to provide.
Mitigation strategies for CVE-2007-6156 should prioritize immediate patching of the BASE application to version 1.3.9 or later, which contains the necessary input validation and sanitization fixes. Organizations should also implement additional defensive measures including web application firewalls that can detect and block malicious input patterns, input validation at multiple layers of the application architecture, and comprehensive output encoding to prevent script execution in web contexts. Security teams should conduct thorough vulnerability assessments to identify any other potentially affected components within their security infrastructure and establish monitoring procedures to detect exploitation attempts. The remediation process should also include user education regarding the dangers of clicking on suspicious links or visiting untrusted websites, as social engineering aspects of XSS attacks often complement technical exploitation methods. Additionally, organizations should consider implementing Content Security Policy headers to add an additional layer of protection against script injection attacks, and regularly review their security configurations to ensure that similar input validation flaws do not exist in other applications within their environment.