CVE-2001-1294 in InetServ
Summary
by MITRE
Buffer overflow in A-V Tronics Inetserv 3.2.1 and earlier allows remote attackers to cause a denial of service (crash) in the Webmail interface via a long username and password.
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Analysis
by VulDB Data Team • 09/27/2025
The vulnerability identified as CVE-2001-1294 represents a critical buffer overflow flaw within the A-V Tronics Inetserv 3.2.1 web server software and earlier versions. This security weakness specifically targets the Webmail interface component of the application, creating a pathway for remote attackers to exploit the system through malformed input parameters. The vulnerability stems from insufficient input validation mechanisms that fail to properly handle excessively long username and password values, leading to memory corruption within the application's processing routines.
The technical implementation of this buffer overflow occurs when the webmail interface receives authentication credentials that exceed the allocated buffer size. This condition causes the application to overwrite adjacent memory locations, potentially leading to unpredictable behavior including application crashes or system instability. The flaw operates at the application layer where user input is processed without adequate bounds checking, making it susceptible to exploitation by remote adversaries who can craft malicious requests to trigger the overflow condition. This type of vulnerability falls under the common weakness enumeration CWE-121, which specifically addresses buffer overflow conditions that occur when insufficient space is allocated for data, and aligns with ATT&CK technique T1203 for exploiting input validation vulnerabilities to cause system instability.
The operational impact of this vulnerability extends beyond simple denial of service conditions, as it can potentially provide attackers with opportunities for more sophisticated attacks. When the webmail interface crashes or becomes unresponsive, legitimate users lose access to email services, creating significant disruption to business operations. The vulnerability affects the availability aspect of the CIA triad, specifically targeting the system's ability to maintain consistent service delivery. Organizations relying on A-V Tronics Inetserv for email services face potential downtime and service interruptions that can impact productivity and communication capabilities.
Mitigation strategies for CVE-2001-1294 should prioritize immediate patching of affected systems with the vendor-provided updates that address the buffer overflow condition. System administrators must implement input validation measures to limit the length of authentication credentials accepted by the webmail interface, thereby preventing the exploitation of the buffer overflow vulnerability. Network segmentation and access controls can help limit the potential impact of exploitation attempts, while monitoring systems should be deployed to detect anomalous authentication patterns that might indicate attempted exploitation. The remediation process should also include thorough testing of patched systems to ensure that the vulnerability has been properly addressed without introducing new stability issues. Organizations should consider implementing additional security controls such as intrusion detection systems that can identify and alert on suspicious authentication attempts that may be attempting to exploit this vulnerability, as outlined in the ATT&CK framework's approach to detecting and preventing credential-based attacks.