CVE-2007-4377 in SurgeMail
Summary
by MITRE
Stack-based buffer overflow in the IMAP service in SurgeMail 38k allows remote authenticated users to execute arbitrary code via a long argument to the SEARCH command. NOTE: this might overlap CVE-2007-4372.
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Analysis
by VulDB Data Team • 09/30/2024
The vulnerability described in CVE-2007-4377 represents a critical stack-based buffer overflow flaw within the IMAP service component of SurgeMail version 38k. This security defect specifically manifests when the service processes a SEARCH command with an excessively long argument, creating a condition where attacker-controlled input can overwrite adjacent memory locations on the stack. The vulnerability requires remote authenticated access, meaning that an attacker must first establish valid credentials to interact with the IMAP service before exploiting this weakness. The flaw falls under the category of software security vulnerabilities that can lead to complete system compromise when successfully exploited.
The technical implementation of this buffer overflow stems from insufficient input validation within the IMAP SEARCH command handler. When a user submits a SEARCH command with argument data exceeding the allocated buffer size, the program fails to properly bounds-check the input before copying it to the stack buffer. This oversight creates a predictable memory corruption scenario where the excess data overflows into adjacent stack memory regions, potentially overwriting return addresses, function pointers, or other critical control data. The stack-based nature of this vulnerability means that the attacker can manipulate the program's execution flow by carefully crafting the overflow to overwrite the return address, effectively redirecting program control to malicious code injected by the attacker.
The operational impact of this vulnerability extends beyond simple denial of service or data corruption, as it provides a pathway for remote code execution. Successful exploitation allows authenticated attackers to execute arbitrary code with the privileges of the IMAP service process, which typically runs with elevated system permissions. This could lead to complete system compromise, data exfiltration, or the establishment of persistent backdoors within the network infrastructure. The vulnerability affects organizations relying on SurgeMail for email services, particularly those with exposed IMAP ports or those that have not implemented proper access controls and network segmentation. The potential for widespread exploitation increases when considering that the vulnerability exists in a widely used email server software that may be deployed across multiple organizations without adequate patch management processes.
Mitigation strategies for this vulnerability should focus on immediate remediation through official vendor patches and updates to SurgeMail version 38k. Organizations should implement network segmentation to limit access to IMAP services, enforce strong authentication mechanisms, and monitor for suspicious SEARCH command usage patterns that might indicate exploitation attempts. The vulnerability aligns with CWE-121 Stack-based Buffer Overflow, which is classified as a fundamental programming error that occurs when a program writes data beyond the boundaries of a fixed-length stack buffer. From an ATT&CK framework perspective, this vulnerability maps to techniques involving command and control communication and privilege escalation, as attackers would need to establish persistent access after initial exploitation. Additionally, implementing input validation controls, address space layout randomization, and stack canaries can provide additional defense-in-depth measures against similar buffer overflow vulnerabilities in the IMAP service and other network applications. The overlap with CVE-2007-4372 suggests that organizations should review their patch management processes to ensure comprehensive protection against related vulnerabilities in the same software component.