CVE-2015-0540 in Document Sciences xPression
Summary
by MITRE
SQL injection vulnerability in the xAdmin interface in EMC Document Sciences xPression 4.2 before P44 and 4.5 SP1 before P03 allows remote authenticated users to execute arbitrary SQL commands via unspecified vectors.
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Analysis
by VulDB Data Team • 07/01/2017
The CVE-2015-0540 vulnerability represents a critical SQL injection flaw within the xAdmin interface of EMC Document Sciences xPression versions 4.2 prior to P44 and 4.5 SP1 prior to P03. This vulnerability resides in the administrative web interface component that manages document processing workflows and system configurations. The flaw enables authenticated remote attackers to inject malicious SQL commands through unspecified input vectors within the xAdmin interface, potentially compromising the underlying database infrastructure that stores system configurations, user credentials, and document metadata. The vulnerability's impact extends beyond simple data exfiltration as it provides attackers with the capability to execute arbitrary database commands with the privileges of the database user account used by the xPression application.
The technical implementation of this vulnerability stems from inadequate input validation and parameter sanitization within the xAdmin interface's backend processing logic. Attackers can manipulate input fields or parameters that are directly incorporated into SQL query strings without proper escaping or parameterization mechanisms. This weakness aligns with CWE-89, which specifically addresses SQL injection vulnerabilities where untrusted data is embedded into SQL commands without proper sanitization. The vulnerability's classification as a remote authenticated attack vector indicates that attackers must first obtain valid credentials to access the xAdmin interface, but once authenticated, they can leverage this flaw to escalate their privileges within the database layer. The unspecified nature of the attack vectors suggests multiple potential entry points including form parameters, URL components, or API endpoints that process user-supplied data.
The operational impact of this vulnerability is severe and multifaceted, potentially allowing attackers to access, modify, or delete sensitive data stored within the xPression system's database. An attacker could extract confidential information such as user credentials, document templates, processing configurations, and business-critical document workflows. The ability to execute arbitrary SQL commands means that attackers could potentially escalate privileges within the database, create new database users, or even gain access to underlying operating system resources if the database server has elevated permissions. This vulnerability directly maps to several ATT&CK techniques including T1078 for valid accounts usage and T1046 for network service scanning, as attackers would need to identify the vulnerable interface and validate their access before exploiting the SQL injection. The vulnerability also enables potential lateral movement within the network if the database server hosts additional services or if the database contains information about other systems.
Organizations affected by CVE-2015-0540 should immediately implement the vendor-provided patches for EMC Document Sciences xPression 4.2 P44 and 4.5 SP1 P03 releases, which contain the necessary input validation and parameter sanitization fixes. Network segmentation and access controls should be strengthened to limit access to the xAdmin interface to only authorized personnel with legitimate business needs. Database activity monitoring should be implemented to detect anomalous SQL query patterns that might indicate exploitation attempts. Security audits should verify that all input parameters are properly sanitized and that the application follows secure coding practices such as parameterized queries or prepared statements. The vulnerability demonstrates the importance of maintaining up-to-date software versions and conducting regular security assessments of administrative interfaces, as these components often represent high-value targets for attackers seeking to gain persistent access to enterprise systems. Additionally, implementing web application firewalls and intrusion detection systems can provide additional layers of protection against SQL injection attacks targeting the affected interface.