CVE-2019-1214
Published: 11 September 2019
Summary
CVE-2019-1214 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Microsoft Windows 10 1709. Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 11.8% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-2 (Flaw Remediation) and AC-6 (Least Privilege).
Deeper analysis
An elevation of privilege vulnerability exists in the Windows Common Log File System (CLFS) driver, which improperly handles objects in memory. The affected component is the CLFS driver present in Windows operating systems, as identified by the CVE-2019-1214 advisory published in September 2019. The issue carries a CVSS 3.1 base score of 7.8 and is associated with CWE-119.
Local attackers with low privileges can exploit the flaw without user interaction to obtain full elevation of privileges on an affected system, resulting in complete control over confidentiality, integrity, and availability of the target.
Microsoft published security guidance addressing the vulnerability through its advisory portal, while the CISA Known Exploited Vulnerabilities catalog lists CVE-2019-1214 as actively used in real-world attacks, underscoring the need for prompt application of available updates.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2019-9782
Vulnerability details
An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory, aka 'Windows Common Log File System Driver Elevation of Privilege Vulnerability'.
- 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 requires applying the vendor patches that remediate the CLFS driver memory-handling flaw before local exploitation can succeed.
Limits the initial low-privilege context an attacker must start from, reducing the impact of successful CLFS EoP to full system control.
Mandates memory-protection mechanisms that can block or contain the improper object handling in the CLFS driver that leads to privilege escalation.