CVE-2006-1044 in LISTSERV
Summary
by MITRE
Multiple buffer overflows in LISTSERV 14.3 and 14.4, including LISTSERV Lite and HPO, with the web archive interface enabled, allow remote attackers to execute arbitrary code via unknown attack vectors related to the WA CGI. NOTE: technical details will be released after the grace period has ended on 20060603.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 01/20/2025
The vulnerability identified as CVE-2006-1044 represents a critical security flaw affecting LISTSERV versions 14.3 and 14.4, including the Lite and HPO variants, when the web archive interface is enabled. This issue manifests through multiple buffer overflow conditions that create exploitable entry points for remote attackers seeking to compromise systems. The vulnerability specifically targets the WA CGI component within the web archive functionality, which serves as a critical interface for managing and accessing archived mailing list content. These buffer overflows occur when the application processes user-supplied input without proper bounds checking, allowing attackers to overwrite adjacent memory locations and potentially execute malicious code with the privileges of the affected service.
The technical implementation of this vulnerability stems from inadequate input validation mechanisms within the web archive interface's CGI scripts. When users interact with the WA CGI functionality through web requests, the application fails to properly sanitize or limit the size of incoming data, creating opportunities for attackers to craft malicious payloads that exceed allocated buffer sizes. This memory corruption can be leveraged to manipulate program execution flow, potentially leading to arbitrary code execution. The vulnerability's classification aligns with CWE-121, which describes heap-based buffer overflow conditions, and CWE-122, covering stack-based buffer overflows, though the specific implementation likely involves heap corruption due to the web application context. The attack vectors remain unspecified due to the embargo period, but typically such vulnerabilities in web archive interfaces involve crafted HTTP requests containing oversized parameters or malformed data structures that trigger the buffer overflow conditions.
The operational impact of this vulnerability extends beyond simple system compromise, as successful exploitation could enable attackers to gain full control over the affected LISTSERV installations. This control could be leveraged to modify mailing list configurations, access confidential communications, or establish persistent access points within the organization's network infrastructure. The web archive interface serves as a critical component for managing historical mailing list content, making it an attractive target for adversaries seeking to access sensitive organizational communications. Given that LISTSERV is commonly used for enterprise and organizational mailing list management, the potential for widespread impact increases significantly when considering that multiple users might access the affected systems through the compromised web interface. The vulnerability also creates opportunities for attackers to perform lateral movement within networks where LISTSERV is deployed, particularly if the service runs with elevated privileges or has access to sensitive network resources.
Mitigation strategies for this vulnerability require immediate attention from system administrators and security teams responsible for maintaining LISTSERV installations. The primary recommendation involves applying vendor-provided patches or updates that address the buffer overflow conditions within the WA CGI components. Organizations should also consider implementing network segmentation to limit access to the web archive interface, particularly if the functionality is not essential for daily operations. Access controls should be strengthened to restrict who can submit requests to the vulnerable CGI scripts, and input validation should be enhanced at multiple layers of the application architecture. Security monitoring should be implemented to detect anomalous patterns in web archive access, particularly unusual request sizes or malformed parameters that might indicate exploitation attempts. Additionally, organizations should consider disabling the web archive interface entirely if it is not required for business operations, as this removes the attack surface entirely. The vulnerability's presence in both LISTSERV 14.3 and 14.4 versions indicates that multiple affected products require remediation, and security teams should conduct comprehensive inventories to identify all impacted systems within their environments. This vulnerability demonstrates the critical importance of maintaining up-to-date security patches and implementing robust input validation practices in web applications, particularly those handling user-supplied content in archive or retrieval interfaces.