CVE-2019-0898 in Windows
Summary
by MITRE
A remote code execution vulnerability exists when the Windows Jet Database Engine improperly handles objects in memory, aka 'Jet Database Engine Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-0889, CVE-2019-0890, CVE-2019-0891, CVE-2019-0893, CVE-2019-0894, CVE-2019-0895, CVE-2019-0896, CVE-2019-0897, CVE-2019-0899, CVE-2019-0900, CVE-2019-0901, CVE-2019-0902.
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Analysis
by VulDB Data Team • 09/17/2023
The CVE-2019-0898 vulnerability represents a critical remote code execution flaw within the Windows Jet Database Engine, a component that has been integral to Microsoft's database infrastructure for decades. This vulnerability specifically targets how the engine handles objects in memory, creating a pathway for attackers to execute arbitrary code on affected systems. The Jet Database Engine, widely used in various Microsoft applications including Outlook, Access, and numerous enterprise solutions, serves as a foundational element for data storage and retrieval operations across the Windows ecosystem. The flaw manifests when the engine fails to properly validate or manage memory objects during database processing operations, potentially allowing malicious actors to manipulate memory structures and gain unauthorized system access.
The technical nature of this vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions, and falls under the broader category of memory corruption vulnerabilities. Attackers can exploit this weakness by crafting specially malformed database files or memory structures that trigger improper handling within the Jet engine's memory management routines. The vulnerability's remote execution capability means that an attacker does not need physical access to the target system, as the exploit can be delivered through network-based attacks, email attachments, or web downloads. The attack surface extends across multiple Microsoft applications that utilize the Jet database engine, making it particularly dangerous as it could affect a wide range of endpoints and enterprise systems. This type of vulnerability is classified under the ATT&CK technique T1203 - Exploitation for Client Execution, where adversaries leverage software vulnerabilities to execute malicious code on target systems.
The operational impact of CVE-2019-0898 is substantial, as it can lead to complete system compromise when exploited successfully. Organizations running affected versions of Windows and applications that rely on the Jet Database Engine face significant risk of data breaches, system infiltration, and potential lateral movement within their networks. The vulnerability's presence in widely deployed software components means that even organizations with robust security perimeters could be vulnerable to exploitation. System administrators must consider the implications for various attack vectors, including email-based attacks, web-based exploitation, and potentially file-sharing scenarios where malicious database files could be introduced into the environment. The memory corruption aspect of this vulnerability makes it particularly challenging to detect through standard network monitoring, as the exploitation may not immediately trigger obvious network traffic patterns. Organizations should also consider the potential for privilege escalation, as successful exploitation could allow attackers to gain elevated system privileges and access sensitive corporate data.
Mitigation strategies for CVE-2019-0898 should encompass both immediate patch management and broader security controls. Microsoft released security updates as part of their regular patching cycle, and organizations must prioritize applying these patches to all affected systems. The vulnerability's classification as a remote code execution flaw necessitates immediate attention, as it represents a high-severity threat that can be exploited without user interaction. Beyond patching, organizations should implement network segmentation to limit the potential spread of exploitation attempts, deploy intrusion detection systems to monitor for suspicious database-related activities, and establish robust email filtering mechanisms to prevent malicious database attachments from reaching users. Security teams should also consider implementing application whitelisting policies to restrict execution of untrusted database files and establish monitoring protocols for unusual memory allocation patterns that might indicate exploitation attempts. The remediation process must include thorough testing of patches in controlled environments before widespread deployment to avoid potential service disruptions, while also maintaining backup and recovery procedures to address any unexpected issues arising from the patching process.