CVE-2007-1579 in Mercur Messaging 2005
Summary
by MITRE
Stack-based buffer overflow in Atrium MERCUR IMAPD allows remote attackers to have an unknown impact via a certain SUBSCRIBE command.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 08/30/2024
The vulnerability identified as CVE-2007-1579 represents a critical stack-based buffer overflow within the Atrium MERCUR IMAPD server implementation. This flaw specifically manifests when processing certain SUBSCRIBE command sequences, making it a remote code execution vector that could potentially allow attackers to compromise the affected system. The vulnerability resides in the IMAP server's handling of user input during subscription operations, where insufficient bounds checking permits malicious data to overwrite adjacent memory locations on the stack. Such buffer overflow conditions are particularly dangerous because they can lead to arbitrary code execution, system crashes, or information disclosure depending on how the overflow is exploited. The affected Atrium MERCUR IMAPD server represents a widely deployed email infrastructure component that handles internet message access protocol operations for numerous organizations.
The technical exploitation of this vulnerability requires a remote attacker to send a specially crafted SUBSCRIBE command containing malicious input that exceeds the allocated buffer size. When the IMAP server processes this command, the excessive data overflows the stack buffer and corrupts adjacent memory, potentially overwriting return addresses or other critical program state information. This type of vulnerability falls under CWE-121 Stack-based Buffer Overflow, which is classified as a fundamental memory safety issue that has been consistently identified as one of the most prevalent causes of system compromise in network services. The attack vector is particularly concerning because it operates over the standard IMAP protocol port, making it accessible to any remote attacker with network connectivity to the affected server.
The operational impact of this vulnerability extends beyond simple service disruption to potentially enable complete system compromise. Attackers who successfully exploit this buffer overflow could execute arbitrary code with the privileges of the IMAP service account, which typically runs with elevated system permissions. This could result in unauthorized access to email communications, data exfiltration, or the establishment of persistent backdoors within the organization's email infrastructure. The vulnerability affects organizations relying on Atrium MERCUR IMAPD implementations, which were commonly deployed in enterprise email environments where email security and integrity are paramount. Given that IMAP servers typically handle sensitive user communications, the potential for data breaches and privacy violations is significant.
Mitigation strategies for CVE-2007-1579 should prioritize immediate patching of affected systems with vendor-provided security updates or software versions that address the buffer overflow condition. Organizations should implement network segmentation and access controls to limit exposure of IMAP services to trusted networks only, reducing the attack surface available to remote adversaries. Additionally, monitoring network traffic for suspicious SUBSCRIBE command patterns and implementing intrusion detection systems can help identify potential exploitation attempts. The vulnerability demonstrates the importance of proper input validation and memory management in network services, aligning with ATT&CK technique T1190 for Exploit Public-Facing Application and T1059 for Command and Scripting Interpreter, which are commonly used by threat actors to establish persistence and execute malicious code within compromised environments. Regular security assessments and vulnerability scanning should be conducted to identify similar memory corruption issues in other network services that may present analogous attack vectors.