CVE-2015-2763 in TRITON AP-EMAIL
Summary
by MITRE
Unspecified vulnerability in Websense TRITON AP-EMAIL before 8.0.0 has unknown impact and attack vectors, related to port 17703.
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Analysis
by VulDB Data Team • 04/15/2018
The vulnerability identified as CVE-2015-2763 affects Websense TRITON AP-EMAIL software versions prior to 8.0.0 and specifically relates to a security weakness on port 17703. This unspecified vulnerability represents a significant concern for organizations relying on Websense's email protection solutions, as it could potentially allow unauthorized access or manipulation of email traffic filtering and monitoring capabilities. The vulnerability's classification as unspecified means that the exact nature of the flaw and its specific attack vectors were not publicly disclosed at the time of reporting, creating uncertainty for security professionals attempting to assess risk exposure.
The technical flaw manifests within the Websense TRITON AP-EMAIL system's handling of network communications on port 17703, which is likely used for administrative or monitoring functions within the email security appliance. This port typically serves as a communication channel for management interfaces, status reporting, or data synchronization between different components of the email security infrastructure. The unspecified nature of the vulnerability suggests that it could involve multiple potential attack vectors including but not limited to buffer overflows, authentication bypasses, or privilege escalation mechanisms that could allow attackers to gain unauthorized access to the email filtering system. Such vulnerabilities in email security appliances are particularly dangerous as they could enable attackers to intercept, modify, or bypass email security controls.
The operational impact of this vulnerability extends beyond simple network access issues, potentially compromising the integrity and confidentiality of email communications within organizations using affected Websense systems. Attackers who successfully exploit this vulnerability could gain administrative access to the email security appliance, allowing them to modify filtering rules, disable security controls, or even redirect email traffic through malicious channels. This could result in data breaches, insider threat exploitation, or the complete bypass of email security measures that organizations rely upon to protect against spam, malware, and phishing attacks. The vulnerability's presence in the email security infrastructure creates a potential backdoor that could be leveraged for persistent threat activities.
Organizations should implement immediate mitigation strategies including applying the vendor-provided security patches for Websense TRITON AP-EMAIL version 8.0.0 or later, which would address the unspecified vulnerability. Network segmentation and access control measures should be implemented to restrict access to port 17703, limiting the attack surface and preventing unauthorized access to administrative interfaces. Regular security assessments and network monitoring should be conducted to detect any anomalous behavior on the affected port. Additionally, organizations should consider implementing network intrusion detection systems that can monitor for unusual traffic patterns on port 17703 and alert security teams to potential exploitation attempts. The vulnerability aligns with common attack patterns documented in the attack surface management framework and represents a typical example of how email security appliances can become targets for sophisticated adversaries seeking to compromise network security controls. This vulnerability demonstrates the importance of maintaining up-to-date security software and implementing defense-in-depth strategies to protect critical email infrastructure components.