Elevation of Privilege Vulnerability in Microsoft Windows Products
CVE-2019-0543

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows Server 2008
Windows Server 2012
Windows 10
Windows 8.1
Vendor
CVE Published:
8 January 2019

Badges

💰 Ransomware👾 Exploit Exists🟡 Public PoC🦅 CISA Reported

What is CVE-2019-0543?

An elevation of privilege vulnerability occurs when Microsoft Windows fails to handle authentication requests correctly. This can allow an attacker to run arbitrary code with elevated permissions, potentially compromising system integrity and sensitive data. Systems affected include various versions of Windows, making it imperative for users and administrators to apply available security updates to mitigate potential risks.

CISA has reported CVE-2019-0543

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2019-0543 as being exploited and is known by the CISA as enabling ransomware campaigns.

The CISA's recommendation is: Apply updates per vendor instructions.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2019-0543 - Proof of Concept

References

http://www.securityfocus.com/bid/106408
vdb-entryx_refsource_BID
https://portal.msrc.microsoft.com/en-US/security-guidance...
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https://www.exploit-db.com/exploits/46156/
exploitx_refsource_EXPLOIT-DB

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 💰

    Used in Ransomware

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • 🟡

    Public PoC available

  • Vulnerability published

  • Vulnerability Reserved

.