CVE-2015-6027 in SNMPc
Summary
by MITRE
Castle Rock Computing SNMPc before 2015-12-17 has XSS via SNMP.
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Analysis
by VulDB Data Team • 08/27/2020
The vulnerability identified as CVE-2015-6027 affects Castle Rock Computing SNMPc software versions prior to the 2015-12-17 release, representing a cross-site scripting vulnerability that specifically exploits SNMP (Simple Network Management Protocol) functionalities. This issue resides within the web interface of the SNMPc application, which is designed for network monitoring and management purposes. The vulnerability stems from insufficient input validation and output encoding mechanisms when processing SNMP-related data within the web application's user interface.
The technical flaw manifests when the SNMPc application fails to properly sanitize user-supplied input originating from SNMP queries, traps, or other SNMP communications. This inadequate sanitization allows malicious actors to inject malicious scripts into the web interface through SNMP data processing. The vulnerability specifically impacts the application's handling of SNMP community strings, trap data, or other SNMP parameters that are displayed within the web UI without proper HTML escaping or sanitization. When legitimate users view pages containing this maliciously injected content, the scripts execute in their browser context, potentially leading to session hijacking, credential theft, or redirection to malicious sites.
The operational impact of this vulnerability extends beyond simple web interface compromise, as SNMPc is typically deployed in network management environments where privileged access and sensitive monitoring data are handled. Attackers exploiting this vulnerability could gain unauthorized access to network monitoring information, potentially compromising network security posture. The attack vector requires minimal privileges since SNMP communication often involves standard community strings that may be easily obtained through network reconnaissance. This vulnerability particularly affects organizations relying on SNMPc for network monitoring who may have limited security awareness around SNMP protocol handling, making the exploitation more likely in poorly configured environments.
Mitigation strategies for CVE-2015-6027 should prioritize immediate patching of affected SNMPc installations to version 2015-12-17 or later, which contains the necessary input validation and output encoding fixes. Organizations should implement network segmentation to limit access to SNMPc interfaces and restrict SNMP communication to trusted sources only. Additional defensive measures include implementing web application firewalls to detect and block malicious script injection attempts, conducting regular security assessments of network monitoring tools, and establishing proper input validation controls for all SNMP data handling. This vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws in web applications, and represents a common attack pattern categorized under ATT&CK technique T1059.007 for scripting languages, particularly in web application contexts where user input is not properly sanitized before rendering in browser environments.