CVE-2008-2333 in Spam Firewall
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in ldap_test.cgi in Barracuda Spam Firewall (BSF) before 3.5.11.025 allows remote attackers to inject arbitrary web script or HTML via the email parameter.
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Analysis
by VulDB Data Team • 12/06/2024
The CVE-2008-2333 vulnerability represents a critical cross-site scripting flaw discovered in the Barracuda Spam Firewall software, specifically within the ldap_test.cgi component. This vulnerability affects versions prior to 3.5.11.025 and exposes the system to remote code execution through malicious web script injection. The flaw resides in how the application processes the email parameter, failing to properly sanitize user input before incorporating it into web responses. This oversight creates an avenue for attackers to craft malicious payloads that can be executed in the context of a victim's browser when they interact with the vulnerable interface.
The technical implementation of this vulnerability aligns with CWE-79, which classifies cross-site scripting as a weakness where untrusted data is incorporated into web pages without proper validation or encoding. The ldap_test.cgi script accepts user input through the email parameter and subsequently displays this data within the HTML response without adequate sanitization measures. Attackers can exploit this by embedding malicious javascript code or HTML content within the email parameter, which then gets executed when other users view the affected page. This type of vulnerability enables attackers to perform session hijacking, steal cookies, redirect users to malicious sites, or execute arbitrary commands on affected systems.
The operational impact of CVE-2008-2333 extends beyond simple data theft, as it provides attackers with persistent access to the spam firewall's administrative interface. When successful, this vulnerability allows unauthorized users to gain elevated privileges within the Barracuda Spam Firewall environment, potentially compromising the entire email security infrastructure. The attack surface is particularly concerning given that the Barracuda Spam Firewall serves as a critical security component in enterprise email environments, making this vulnerability a prime target for threat actors seeking to establish persistent access to corporate networks. The vulnerability also aligns with ATT&CK technique T1059.007, which covers scripting languages such as javascript, and T1566.002, related to spearphishing with attachments, as attackers could leverage this flaw to deliver malicious payloads.
Mitigation strategies for this vulnerability require immediate patching to version 3.5.11.025 or later, which addresses the input sanitization issues in the ldap_test.cgi script. Organizations should also implement proper output encoding mechanisms to prevent similar issues in other components, ensuring that all user-supplied data is properly escaped before being rendered in web contexts. Network segmentation and access controls should be reviewed to limit exposure of the vulnerable interface, while regular security assessments should be conducted to identify other potential injection points within the application. The vulnerability demonstrates the critical importance of input validation and output encoding practices in web application security, as outlined in OWASP Top 10 A03:2021, which emphasizes the need for proper data sanitization to prevent injection attacks.