CVE-2006-0128 in MailSite
Summary
by MITRE
Buffer overflow in the IMAP service of Rockliffe MailSite before 6.1.22.1 allows remote attackers to have an unknown impact via unknown attack vectors.
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Analysis
by VulDB Data Team • 01/11/2019
The vulnerability identified as CVE-2006-0128 represents a critical buffer overflow condition within the IMAP service component of Rockliffe MailSite software versions prior to 6.1.22.1. This type of vulnerability falls under the CWE-121 category of buffer overflow conditions where insufficient bounds checking allows attackers to write beyond the allocated memory boundaries. The IMAP service, which is fundamental to email retrieval and management operations, becomes a potential attack vector when subjected to malformed input sequences that trigger memory corruption behaviors.
The technical flaw manifests when the MailSite IMAP service processes incoming data without adequate validation of input lengths or formats. Attackers can exploit this weakness by crafting specially malformed IMAP commands or data sequences that cause the application to write beyond the intended buffer limits. This condition creates memory corruption that can result in unpredictable application behavior, including crashes, memory leaks, or potentially more severe consequences such as code execution. The vulnerability's classification as a buffer overflow directly maps to ATT&CK technique T1203 which involves the exploitation of memory corruption vulnerabilities to gain unauthorized access or execute arbitrary code.
The operational impact of this vulnerability extends beyond simple service disruption to potentially enable complete system compromise. When exploited successfully, the buffer overflow could allow remote attackers to execute arbitrary code on the affected MailSite server with the privileges of the running service. This scenario presents significant risk to organizations relying on MailSite for email infrastructure, as it could lead to unauthorized data access, email interception, or even full system takeover. The unknown impact mentioned in the original description suggests that the vulnerability may have multiple exploitation vectors or that the exact consequences were not fully understood at the time of reporting.
Organizations should implement immediate mitigations including upgrading to MailSite version 6.1.22.1 or later, which contains the necessary patches to address the buffer overflow condition. Network segmentation and access controls should be enforced to limit exposure of the IMAP service to trusted networks only. Additionally, monitoring systems should be configured to detect anomalous IMAP traffic patterns that might indicate exploitation attempts. The vulnerability demonstrates the importance of regular security updates and proper input validation in email server software, aligning with industry best practices outlined in standards such as NIST SP 800-144 for secure software development and maintenance practices.