CVE-2018-10648 in XenMobile Server
Summary
by MITRE
There are Unauthenticated File Upload Vulnerabilities in Citrix XenMobile Server 10.8 before RP2 and 10.7 before RP3.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 02/08/2020
The Citrix XenMobile Server contains critical unauthenticated file upload vulnerabilities that represent a significant threat to enterprise mobile device management infrastructure. This vulnerability affects versions 10.8 before release pack 2 and 10.7 before release pack 3, creating a persistent attack surface that allows malicious actors to upload arbitrary files to the server without proper authentication. The flaw resides in the server's file handling mechanisms, specifically within the upload functionality that fails to properly validate or sanitize file inputs. This vulnerability directly maps to CWE-434 which describes insecure file upload vulnerabilities where systems accept files without adequate validation, and aligns with ATT&CK technique T1195.001 for the initial access phase through web shell deployment.
The technical implementation of this vulnerability stems from insufficient input validation within the XenMobile Server's upload endpoints. Attackers can exploit this weakness by crafting malicious files and uploading them to the server through unprotected upload interfaces. The lack of authentication requirements means that any remote attacker can leverage this vulnerability without needing valid credentials or prior access to the system. The uploaded files can include web shells, malicious scripts, or other payload types that can be executed within the server environment, potentially leading to complete system compromise. This vulnerability represents a critical weakness in the server's access control mechanisms and demonstrates a fundamental failure in secure file handling practices.
The operational impact of this vulnerability extends far beyond simple unauthorized file uploads, as it provides attackers with a potential path to establish persistent access within enterprise environments. Once successfully exploited, attackers can execute arbitrary code on the server, potentially leading to data exfiltration, privilege escalation, and lateral movement throughout the network. The affected XenMobile Server instances often serve as central points for mobile device management, making them attractive targets for attackers seeking to compromise enterprise mobility management infrastructure. This vulnerability can result in significant business disruption, regulatory compliance violations, and potential exposure of sensitive corporate data. Organizations using these vulnerable versions face immediate risk of unauthorized access and system compromise, with potential for extended attack surface exploitation.
Mitigation strategies for this vulnerability require immediate patching of affected systems to the latest available release packs that address the file upload validation issues. Organizations should implement network segmentation to limit access to XenMobile Server components and deploy additional monitoring for suspicious file upload activities. The implementation of web application firewalls and file type validation controls can provide additional defense layers against exploitation attempts. Security teams should conduct thorough network scans to identify all affected instances and establish incident response procedures for potential exploitation. The vulnerability's classification as a critical risk warrants immediate attention from security operations teams and should be prioritized alongside other high-severity threats in enterprise security programs. Regular security assessments and vulnerability management processes should be enhanced to prevent similar issues in other enterprise applications.