CVE-2005-3314 in NetMail
Summary
by MITRE
Stack-based buffer overflow in the IMAP daemon in Novell Netmail 3.5.2 allows remote attackers to execute arbitrary code via "long verb arguments."
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Analysis
by VulDB Data Team • 08/02/2019
The vulnerability described in CVE-2005-3314 represents a critical stack-based buffer overflow affecting the IMAP daemon component of Novell Netmail version 3.5.2. This flaw resides within the mail server's handling of IMAP protocol commands, specifically when processing verb arguments that exceed the allocated buffer space. The issue manifests as a classic stack overflow condition where maliciously crafted input causes data to overwrite adjacent memory locations, potentially leading to arbitrary code execution. The vulnerability is particularly dangerous because it operates over a network connection, allowing remote attackers to exploit the flaw without requiring local system access or authentication credentials.
The technical implementation of this vulnerability stems from inadequate input validation within the IMAP daemon's command processing logic. When the daemon receives IMAP commands containing excessively long verb arguments, it fails to properly bounds-check the input data before copying it into fixed-size stack buffers. This fundamental flaw creates an exploitable condition where an attacker can manipulate the stack pointer and return addresses, effectively redirecting program execution flow to malicious code injected into the buffer. The vulnerability maps directly to CWE-121, which describes stack-based buffer overflow conditions, and represents a common attack vector in network services that process untrusted input from remote clients.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with complete control over the affected mail server. Successful exploitation could enable adversaries to gain unauthorized access to email communications, modify or delete messages, establish persistent backdoors, or use the compromised system as a launch point for further attacks against internal networks. The IMAP protocol's widespread use in enterprise environments means that exploitation could potentially compromise large numbers of email accounts and sensitive organizational data. From an attack framework perspective, this vulnerability aligns with ATT&CK technique T1071.004 for application layer protocol usage and T1059.007 for scripting languages, as attackers would likely use this vulnerability to establish command and control channels.
Mitigation strategies for CVE-2005-3314 should prioritize immediate patching of the Novell Netmail 3.5.2 software to the vendor-released security updates. Organizations should implement network segmentation to limit access to IMAP services and deploy intrusion detection systems to monitor for suspicious command patterns that might indicate exploitation attempts. Additional defensive measures include configuring firewalls to restrict access to IMAP ports, implementing input validation at network boundaries, and conducting regular security assessments of email infrastructure components. The vulnerability serves as a reminder of the critical importance of proper input validation and memory management in network services, emphasizing the need for robust software security practices throughout the development lifecycle to prevent similar issues from arising in modern applications.