CVE-2017-14090 in ScanMail for Exchange
Summary
by MITRE
A vulnerability in Trend Micro ScanMail for Exchange 12.0 exists in which some communications to the update servers are not encrypted.
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Analysis
by VulDB Data Team • 12/15/2019
The vulnerability identified as CVE-2017-14090 affects Trend Micro ScanMail for Exchange version 12.0, representing a critical security flaw in the email security solution's communication protocols. This issue stems from the application's failure to implement proper encryption for data transmission between the ScanMail server and Trend Micro's update servers. The vulnerability exposes sensitive information and potentially allows attackers to intercept communications that should remain protected. Organizations utilizing this email security platform face significant risks due to the unencrypted nature of these critical update communications.
The technical flaw manifests in the application's network communication implementation where certain update processes do not utilize secure encryption protocols such as TLS or SSL. This creates a man-in-the-middle attack surface where malicious actors can potentially eavesdrop on update traffic, capture sensitive configuration data, or even manipulate the update process to deliver malicious payloads. The vulnerability specifically impacts the communication channels used for downloading security updates, threat intelligence feeds, and other critical operational data from Trend Micro's infrastructure. This represents a weakness in the principle of least privilege and secure communication practices that should be fundamental to enterprise security solutions.
The operational impact of this vulnerability extends beyond simple data exposure, potentially allowing attackers to compromise the entire email security infrastructure. When update communications are unencrypted, threat actors can intercept credentials, system configurations, and security policies that are transmitted during the update process. This creates opportunities for attackers to gain unauthorized access to email systems, manipulate security rules, or establish persistent backdoors within the organization's email infrastructure. The vulnerability undermines the trust model of the security solution itself, as the very mechanism designed to protect against threats becomes a potential attack vector. Organizations may experience cascading security failures when update processes are compromised, leading to widespread email system vulnerabilities.
Mitigation strategies for CVE-2017-14090 should prioritize immediate implementation of network-level protections such as firewall rules that restrict communication to trusted update servers, along with network monitoring to detect anomalous traffic patterns. Organizations should implement network segmentation to isolate email security infrastructure from general network traffic, reducing the attack surface. The most effective long-term solution involves applying the vendor-provided patch or upgrade that addresses the encryption implementation flaw. Security teams should also consider implementing network traffic inspection tools to monitor for unencrypted communications and establish baseline network behavior to detect potential exploitation attempts. This vulnerability aligns with CWE-319, which addresses the exposure of sensitive information through improper encryption, and may map to ATT&CK techniques involving credential access and command and control communications. Organizations should conduct comprehensive network audits to identify all instances of the vulnerable software and ensure proper encryption is enforced across all communication channels to prevent similar vulnerabilities in other security tools.