CVE-2005-2848 in Barracuda Spam Firewall
Summary
by MITRE
Directory traversal vulnerability in img.pl in Barracuda Spam Firewall running firmware 3.1.16 and 3.1.17 allows remote attackers to read arbitrary files via a .. (dot dot) in the f parameter.
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Analysis
by VulDB Data Team • 05/15/2025
The vulnerability identified as CVE-2005-2848 represents a critical directory traversal flaw within the Barracuda Spam Firewall software ecosystem. This security weakness specifically affects firmware versions 3.1.16 and 3.1.17 of the Barracuda Spam Firewall appliance, which is widely deployed for email security and spam filtering purposes in enterprise environments. The vulnerability resides in the img.pl script component that handles image processing functionality within the web interface. The flaw stems from inadequate input validation mechanisms that fail to properly sanitize user-supplied parameters before processing file requests, creating a pathway for malicious actors to access unauthorized system resources.
The technical exploitation of this vulnerability occurs through manipulation of the f parameter in the img.pl script, where attackers can inject .. (dot dot) sequences to navigate upward through the directory structure. This allows remote threat actors to traverse beyond the intended file access boundaries and retrieve arbitrary files from the underlying operating system. The vulnerability aligns with CWE-22, which classifies directory traversal attacks as a fundamental weakness in input validation where user-controllable data is used to construct file paths without proper sanitization. The attack vector operates entirely through HTTP requests, making it accessible to remote attackers without requiring physical access or authentication credentials, thereby increasing the exploitability factor significantly.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with the ability to access sensitive system files, configuration data, and potentially credentials stored within the firewall appliance. This could enable adversaries to gain comprehensive insights into the network infrastructure, potentially leading to further compromise of the email security perimeter. The vulnerability directly contradicts the principle of least privilege by allowing unauthorized file access that should be restricted to legitimate administrative functions. From an ATT&CK framework perspective, this vulnerability maps to T1566.001 (Phishing with Malicious Attachment) and T1083 (File and Directory Discovery) as attackers can leverage this weakness to gather intelligence about the target environment and potentially escalate privileges.
Mitigation strategies for CVE-2005-2848 should prioritize immediate firmware updates to versions that address the directory traversal vulnerability, as Barracuda typically released patches to resolve this specific weakness. Network administrators should implement additional protective measures including web application firewalls that can detect and block malicious traversal sequences, input validation at the perimeter, and strict access controls limiting administrative interfaces to trusted networks only. The vulnerability demonstrates the critical importance of proper input sanitization and the need for security-by-design principles in network appliances. Organizations should also conduct comprehensive vulnerability assessments to identify similar weaknesses in other network security devices and ensure that all firmware components are regularly updated to maintain security posture against known vulnerabilities.