CVE-2018-11245 in MISP
Summary
by MITRE
app/webroot/js/misp.js in MISP 2.4.91 has a DOM based XSS with cortex type attributes.
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Analysis
by VulDB Data Team • 03/14/2023
The vulnerability identified as CVE-2018-11245 resides within the MISP (Malware Information Sharing Platform) software version 2.4.91, specifically in the file app/webroot/js/misp.js. This represents a critical security flaw that affects the platform's web interface and poses significant risks to users relying on the system for threat intelligence sharing. MISP is widely deployed by cybersecurity professionals, law enforcement agencies, and organizations seeking to collaborate on malware analysis and threat detection, making this vulnerability particularly concerning given its potential to compromise the integrity of threat intelligence workflows.
The technical nature of this vulnerability is classified as a DOM-based cross-site scripting flaw, which occurs when malicious input is processed by JavaScript code and subsequently injected into the Document Object Model without proper sanitization. In this specific case, the vulnerability manifests when cortex type attributes are handled within the JavaScript code, allowing attackers to inject malicious scripts through crafted input that gets executed in the context of other users' browsers. The flaw operates by manipulating the DOM structure through user-controllable data, making it particularly insidious as it can be exploited through various attack vectors including phishing emails, compromised web pages, or malicious attachments that trigger the vulnerable JavaScript execution path.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform a range of malicious activities including session hijacking, credential theft, data exfiltration, and privilege escalation within the MISP environment. Given that MISP systems often contain sensitive threat intelligence data, including malware samples, indicators of compromise, and organizational security information, successful exploitation could result in significant compromise of security operations. The vulnerability affects all users of the affected MISP version who interact with cortex type attributes, which are commonly used for automated threat intelligence processing and enrichment. This creates a broad attack surface where even casual interaction with potentially malicious indicators could trigger the exploit.
Mitigation strategies for this vulnerability should prioritize immediate patching of the MISP software to version 2.4.92 or later, which contains the necessary fixes for the DOM-based XSS flaw. Organizations should also implement additional defensive measures including strict input validation and sanitization of all user-supplied data, particularly when processing cortex attributes and other automated intelligence feeds. Network segmentation and web application firewalls can provide additional layers of protection by monitoring and filtering malicious traffic patterns. Security teams should conduct thorough vulnerability assessments to identify any potential exploitation attempts and implement monitoring solutions that can detect anomalous JavaScript behavior within the MISP environment. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and represents a technique that could be categorized under ATT&CK tactic TA0001 (Initial Access) and technique T1059.007 (Command and Scripting Interpreter: JavaScript) as attackers could leverage this vulnerability to establish persistent access through malicious script injection. Organizations should also consider implementing Content Security Policy headers to limit the execution of inline scripts and reduce the impact of such vulnerabilities in the event of future exploits.