CVE-2017-9035 in ServerProtect for Linux
Summary
by MITRE
Trend Micro ServerProtect for Linux 3.0 before CP 1531 allows attackers to eavesdrop and tamper with updates by leveraging unencrypted communications with update servers.
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Analysis
by VulDB Data Team • 10/02/2020
The vulnerability identified as CVE-2017-9035 affects Trend Micro ServerProtect for Linux version 3.0 prior to CP 1531, representing a significant security weakness in the software's update mechanism. This flaw enables attackers to intercept and modify critical security updates that are essential for maintaining system protection against emerging threats. The vulnerability stems from the use of unencrypted communication channels during the update process, which creates an attack surface that adversaries can exploit to compromise the integrity and confidentiality of the update communications.
The technical implementation of this vulnerability involves the lack of encryption protocols during update transmission between the ServerProtect client and Trend Micro's update servers. This unencrypted communication channel exposes sensitive update data to man-in-the-middle attacks, where malicious actors can eavesdrop on the communication stream to capture update packages or inject malicious code into the update process. The vulnerability specifically affects the authentication and data integrity mechanisms that should normally protect update communications, allowing attackers to manipulate the update content before it reaches the target system.
From an operational impact perspective, this vulnerability creates a severe risk to enterprise security infrastructure as it undermines the fundamental principle of secure software updates. Organizations using affected versions of ServerProtect face the potential for malicious code injection into their security software, which could result in complete compromise of the protection mechanisms. The attack could lead to the installation of backdoors, rootkits, or other malicious components that would remain undetected while the compromised system continues to operate under the guise of legitimate security protection. This vulnerability directly contradicts industry standards such as those outlined in CWE-319, which addresses the exposure of sensitive information through unencrypted communication channels.
The attack vector for this vulnerability aligns with several tactics described in the MITRE ATT&CK framework, particularly those related to persistence and privilege escalation through legitimate system tools. Attackers can leverage this weakness to maintain long-term access to compromised systems while appearing to operate within normal update processes. The vulnerability also intersects with techniques involving credential theft and data manipulation, as the compromised update mechanism could be used to steal sensitive information from the system or modify security policies. Organizations implementing ServerProtect are particularly vulnerable during update windows when the system is actively communicating with external servers.
Security mitigations for this vulnerability include immediate upgrading to Trend Micro ServerProtect version 3.0 CP 1531 or later, which implements proper encryption for update communications. Organizations should also implement network monitoring to detect unusual update traffic patterns and consider deploying additional security controls such as network segmentation to limit the impact of potential compromise. The implementation of proper certificate validation and secure communication protocols should be enforced to prevent similar vulnerabilities in other security software components. This vulnerability highlights the critical importance of maintaining up-to-date security software and implementing robust communication encryption as fundamental security practices.