CVE-2019-3483 in Arcsight Logger
Summary
by MITRE
Mitigates a potential information leakage issue in ArcSight Logger versions prior to 6.7.
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Analysis
by VulDB Data Team • 08/07/2023
The CVE-2019-3483 vulnerability represents a significant information disclosure flaw affecting ArcSight Logger versions prior to 6.7, where the system fails to properly sanitize user inputs before processing them in log parsing operations. This vulnerability stems from inadequate validation and sanitization mechanisms within the logging infrastructure, allowing malicious actors to potentially extract sensitive data through crafted input sequences. The flaw exists in the way the system handles log data ingestion and processing, creating an avenue for unauthorized information exposure that could compromise the confidentiality of log data and associated system information.
The technical implementation of this vulnerability involves the improper handling of user-supplied data within the ArcSight Logger's parsing and indexing components. When the system processes log entries containing specially crafted input sequences, it fails to adequately filter or escape these inputs before they are stored or transmitted to other system components. This processing gap creates opportunities for attackers to manipulate the system's behavior and potentially access information that should remain restricted. The vulnerability is particularly concerning because it operates at the data ingestion level, meaning that malicious inputs can be introduced through normal log submission processes without requiring elevated privileges or direct system access.
From an operational impact perspective, this vulnerability poses serious risks to organizations relying on ArcSight Logger for security monitoring and compliance reporting. The information leakage could expose sensitive operational data, user credentials, system configurations, or other confidential information contained within log entries. Security teams may find that their security event and incident management capabilities are compromised, as attackers could potentially manipulate log data to hide malicious activities or gain insights into system vulnerabilities. The impact extends beyond simple data exposure, potentially affecting compliance requirements and forensic investigation capabilities, as the integrity of the logging system becomes questionable.
Organizations should immediately implement the vendor-provided patch for ArcSight Logger version 6.7 or later to address this vulnerability. The mitigation strategy should include comprehensive testing of the patched environment to ensure that the fix does not introduce regressions in log processing functionality. Network segmentation and monitoring of log submission processes can serve as additional defensive measures while awaiting the patch deployment. Security teams should also conduct thorough audits of existing log data to identify any potential exploitation that may have occurred prior to patching. This vulnerability aligns with CWE-20, which addresses improper input validation, and maps to ATT&CK technique T1070.004 for indicator removal from logs, as attackers could potentially use this flaw to manipulate log data to avoid detection. The remediation process should include updating system configurations to enforce proper input sanitization and implementing continuous monitoring to detect anomalous log processing patterns that might indicate exploitation attempts.