CVE-2019-0880 identifies a critical local elevation of privilege vulnerability affecting Microsoft Windows systems. This vulnerability allows attackers to exploit the way splwow64.exe processes certain calls, potentially leading to unauthorized access and control over affected systems. The CVSS score of 7.8 signifies a high severity, indicating significant risk to organizations if not addressed promptly. Given its nature, attackers could leverage this vulnerability to escalate privileges and gain additional access to critical system resources.
The urgency for defenders to patch this vulnerability is underscored by the fact that it is included in the Known Exploited Vulnerabilities (KEV) catalog. Organizations should prioritize remediation actions to mitigate potential exploitation risks associated with this vulnerability, especially in environments that rely on the affected components.
Risk to organizations includes unauthorized access to sensitive data and systems, which could have severe operational impacts. Security teams must remain vigilant and ensure that all systems are updated with the latest patches to defend against potential exploitation.
As this vulnerability has been publicly disclosed, it is crucial to monitor for any indicators of compromise and to take proactive measures in patch management. Organizations that delay remediation may face heightened risk of successful attacks.
Vulnerability Details
The official description of CVE-2019-0880 states: 'A local elevation of privilege vulnerability exists in how splwow64.exe handles certain calls, aka 'Microsoft splwow64 Elevation of Privilege Vulnerability'.' This vulnerability is classified under the CWE- no information, and its high CVSS score of 7.8 signals a serious risk for affected systems.
The affected Microsoft products include Windows 10 versions 1507, 1607, 1703, 1709, 1803, 1809, 1903, Windows 8.1, Windows RT 8.1, Windows Server 2012, 2016, and 2019. The vulnerability was published on July 15, 2019, and has been analyzed thoroughly by security researchers.
Technical Analysis
The root cause of the vulnerability lies in the improper handling of certain calls by the splwow64.exe component of Windows. This flaw allows attackers with low-integrity access to escalate their privileges to medium-integrity, which may lead to unauthorized actions on the system.
The attack vector is local, meaning an attacker must have access to the system to exploit this vulnerability. The attack complexity is low, as minimal skill is required to execute the attack. Privileges required are low, which means that even a user with basic access could potentially exploit this flaw.
User interaction is not required for successful exploitation, making it more dangerous. The impacts on confidentiality, integrity, and availability are all high, indicating that successful exploitation can lead to significant damage or loss of data.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability is substantial. Organizations using affected Windows versions should assess their exposure and potential blast radius if this vulnerability were to be exploited. Given that it is actively included in the KEV catalog, the urgency for remediation is high.
The potential impact on organizations includes unauthorized data access, disruption of services, and a loss of trust from customers and stakeholders. As such, organizations must prioritize patching efforts based on the severity of this vulnerability.
With the CVSS score indicating a high risk, immediate action is recommended for organizations to mitigate this vulnerability effectively.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The following versions of Microsoft Windows are affected by CVE-2019-0880: Windows 10 (1507, 1607, 1703, 1709, 1803, 1809, 1903), Windows 8.1, Windows RT 8.1, and various Windows Server versions (2012, 2016, 2019). All versions prior to vendor patch are vulnerable.
Mitigation & Remediation
Organizations should apply updates as per vendor instructions to remediate this vulnerability. For more details on patching, refer to the application security assessment resources provided by Microsoft.
In addition to applying patches, organizations should consider implementing configuration hardening measures to minimize exposure to potential exploitation. Regular network monitoring can also help detect any unusual activity that may indicate an attempted exploitation of this vulnerability.
Detection Guidance
Organizations should monitor logs for indicators of unusual access patterns or privilege escalations. Behavioral anomalies, such as unexpected changes to user permissions or system configurations, may also indicate exploitation attempts.
Network signatures should be updated to detect any unauthorized access attempts. Regular system audits can help identify any deviations from expected configurations, enabling organizations to respond swiftly to potential threats.
AppSecure Threat Intelligence Insight
CVE-2019-0880 represents a significant risk for organizations using Microsoft Windows, particularly given its inclusion in the KEV catalog. The nature of this vulnerability, allowing for local privilege escalation, highlights the ongoing need for robust security practices, including timely patching and continuous monitoring.
Security teams should analyze patterns in the exploitation of similar vulnerabilities to better defend against future threats. The lessons learned from CVE-2019-0880 should inform ongoing security strategies and the need for comprehensive vulnerability management programs.
For further insights, organizations are encouraged to explore the following resources: vulnerability management program design, penetration testing methodology, and API penetration testing guide which can help bolster defenses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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