CVE-2017-12216 in SocialMiner
Summary
by MITRE
A vulnerability in the web-based user interface of Cisco SocialMiner could allow an unauthenticated, remote attacker to have read and write access to information stored in the affected system. The vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing an XML file. An attacker could exploit this vulnerability by convincing the administrator of an affected system to import a crafted XML file with malicious entries, which could allow the attacker to read and write files and execute remote code within the application. Cisco Bug IDs: CSCvf47946.
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Analysis
by VulDB Data Team • 01/11/2021
The vulnerability identified as CVE-2017-12216 represents a critical security flaw in Cisco SocialMiner's web-based user interface that exposes organizations to significant remote attack vectors. This weakness stems from inadequate input validation and processing of XML data within the application's parsing mechanisms, creating a pathway for malicious actors to gain unauthorized access to sensitive system resources. The vulnerability specifically targets the XML External Entity (XXE) processing functionality, which is a well-documented class of security issues that have plagued numerous applications over the years. According to CWE-611, this vulnerability falls under the category of improper restriction of XML external entity reference, making it a direct descendant of the broader XXE attack pattern that has been extensively documented in cybersecurity literature.
The exploitation mechanism for this vulnerability requires an attacker to manipulate a targeted administrator into importing a specially crafted XML file that contains malicious external entity declarations. This social engineering component is critical to the attack vector since the vulnerability itself is not directly accessible from external networks without administrative interaction. The XXE processing flaw allows the application to resolve external references and potentially access local system resources, enabling an attacker to perform read and write operations on files within the application's operational environment. This capability extends beyond simple data exfiltration to include potential code execution within the application context, making the impact significantly more severe than typical information disclosure vulnerabilities.
The operational impact of CVE-2017-12216 extends far beyond immediate data compromise, as it provides attackers with persistent access to the underlying system resources that could be leveraged for further attacks within the network. Once an attacker successfully exploits this vulnerability, they can potentially escalate their privileges and move laterally through the network infrastructure, as the compromised SocialMiner system may have access to sensitive customer data, system configurations, and communication channels. The ability to execute remote code within the application context aligns with ATT&CK technique T1059, which describes the use of remote code execution capabilities to gain persistent access to target systems. This vulnerability essentially provides a foothold for attackers to establish long-term presence within the organization's network infrastructure.
Organizations affected by this vulnerability should prioritize immediate remediation through the application of Cisco's official security patches and updates. The mitigation strategy should include comprehensive network monitoring to detect potential exploitation attempts, particularly focusing on unusual XML file imports or unexpected network connections from affected systems. Security teams should also implement strict access controls and user permission management to limit the potential impact of successful exploitation attempts. According to industry best practices for XXE mitigation, organizations should disable external entity processing in XML parsers and implement proper input validation to prevent malicious XML content from being processed. Additionally, network segmentation and regular security assessments should be conducted to identify and remediate similar vulnerabilities across the entire infrastructure, as XXE vulnerabilities often exist in multiple components of enterprise applications and require systematic addressing rather than isolated fixes.