CVE-2008-1168 in Squid Analysis Report Generator
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Squid Analysis Report Generator (Sarg) 2.2.3.1 allows remote attackers to inject arbitrary web script or HTML via the User-Agent header, which is not properly handled when displaying the Squid proxy log. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 08/07/2019
The vulnerability identified as CVE-2008-1168 represents a cross-site scripting flaw in the Squid Analysis Report Generator version 2.2.3.1, a widely used tool for analyzing squid proxy server logs. This type of vulnerability falls under the Common Weakness Enumeration category CWE-79, which specifically addresses improper neutralization of input during web output rendering. The SARG tool serves as an essential component for system administrators to monitor and analyze web traffic patterns through squid proxy servers, making it a critical element in network security monitoring infrastructure. The vulnerability manifests when the application fails to properly sanitize user input from the User-Agent header, which is commonly transmitted by web browsers and other HTTP clients during requests. When the SARG application processes and displays these logs in its web-based reporting interface, it directly incorporates the unsanitized User-Agent values without adequate output encoding or validation, creating an exploitable condition that allows malicious actors to inject arbitrary HTML and script code.
The operational impact of this vulnerability extends beyond simple data corruption or display issues, as it enables remote attackers to execute malicious scripts within the context of users who view the affected reports. This creates a significant risk for organizations relying on SARG for security monitoring, as an attacker could potentially craft malicious User-Agent strings that, when processed by the application, would execute code in the browsers of unsuspecting administrators or security personnel who access the generated reports. The attack vector is particularly concerning because User-Agent headers are automatically included in nearly all HTTP requests and are often not manually controlled by end users, making the exploitation relatively straightforward and difficult to detect. The vulnerability specifically affects the web interface of SARG when displaying proxy logs, meaning that any user who accesses the report generation pages could be exposed to the malicious script execution, potentially leading to session hijacking, credential theft, or redirection to malicious sites.
Mitigation strategies for CVE-2008-1168 should focus on implementing proper input validation and output encoding mechanisms within the SARG application. Organizations should immediately upgrade to a patched version of SARG if available, as the vulnerability has been known since 2008 and likely has been addressed in subsequent releases. When immediate upgrades are not feasible, administrators can implement defensive measures such as configuring web application firewalls to filter suspicious User-Agent patterns or implementing custom sanitization routines that escape special HTML characters before displaying log data. The vulnerability also highlights the importance of following secure coding practices that align with the OWASP Top Ten security principles, particularly those related to input validation and output encoding. From an operational security perspective, this vulnerability demonstrates the critical need for regular security assessments of monitoring and reporting tools, as these applications often serve as attack surfaces that can be leveraged for more sophisticated attacks against the broader network infrastructure. The incident also underscores the necessity of maintaining current threat intelligence and vulnerability management processes to identify and remediate similar weaknesses in other security tools and applications within the organization's technology stack.