CVE-2019-0808
Published: 09 April 2019
Summary
CVE-2019-0808 is a high-severity an unspecified weakness vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 1.2% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-16 (Memory Protection) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2019-0808 is an elevation of privilege vulnerability in the Windows Win32k component that arises when the component fails to properly handle objects in memory. It affects supported Windows releases and carries a CVSS 3.1 base score of 7.8 reflecting local attack vector, low attack complexity, and low privileges required.
An authenticated local attacker can exploit the flaw to escalate privileges and obtain full control over the affected system, resulting in high impact to confidentiality, integrity, and availability. The vulnerability is distinct from the related Win32k issue tracked as CVE-2019-0797.
Microsoft’s security advisory and associated patches address the issue, and the vulnerability appears in CISA’s catalog of known exploited vulnerabilities in the wild. Public exploit code referencing the NtUserMNDragOver function has also been published.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2019-1563
Vulnerability details
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0797.
- CWE(s)
- KEV Date Added
- 03 November 2021
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly protects process memory from unauthorized code execution or object manipulation, mitigating the Win32k memory-handling flaw that enables local privilege escalation.
Requires timely application of vendor patches that remediate the specific Win32k object-handling vulnerability before exploitation.
Enforces least privilege so an authenticated local attacker begins with minimal rights, reducing the impact of successful Win32k exploitation to full system control.