Microsoft December 2024 Patch Tuesday – 71 Vulnerabilities Fixed, Including 1 Zero-day & 30 RCEs
Microsoft has released its December 2024 Patch Tuesday updates, addressing a total of 72 vulnerabilities, including 30 critical Remote Code Execution (RCE) flaws. These fixes are crucial for maintaining the security of Windows operating systems and related software, especially as cyber threats continue to evolve.
Key Highlights of December 2024 Patch Tuesday Updates:
The December security update tackles a wide range of vulnerabilities, with a focus on critical RCE and Elevation of Privilege (EoP) issues. Here’s a breakdown of the key vulnerabilities addressed:
- 71 Vulnerabilities Fixed: The update includes patches for 71 vulnerabilities, including 30 RCE flaws, 28 EoP vulnerabilities, 4 Denial of Service (DoS) flaws, 1 spoofing vulnerability, and 7 information disclosure vulnerabilities.
- Critical Elevation of Privilege (EoP) Issues: These vulnerabilities could allow attackers to gain unauthorized access to higher system privileges, which could lead to full control over affected systems.
- Defense-in-Depth Improvement: In addition to the critical fixes, this update also includes one defense-in-depth improvement to enhance system protection.
Zero-Day Vulnerability Exploited
One of the most concerning vulnerabilities patched in this update is CVE-2024-49138, a zero-day flaw actively exploited before being addressed. This Elevation of Privilege vulnerability affects the Windows Common Log File System Driver, potentially allowing attackers to gain SYSTEM privileges and control over vulnerable devices.
Discovered by the Advanced Research Team at CrowdStrike, this vulnerability could lead to full system compromise. Although specific exploitation methods have not been disclosed, it’s confirmed that this issue was actively being exploited in the wild. Users are strongly urged to apply the patch immediately to protect their systems.
Critical Remote Code Execution (RCE) Vulnerabilities
This month’s Patch Tuesday addresses several critical RCE vulnerabilities, including CVE-2024-49116, which impacts multiple versions of Windows Server. Exploiting this flaw could allow attackers to execute arbitrary code remotely, potentially giving them full control of the affected system.
Some of the affected products include:
- Windows Server 2025 (Server Core Installation)
- Windows Server 2022, 23H2 Edition (Server Core installation)
- Windows Server 2022
- Windows Server 2019
- Windows Server 2012 R2
Another notable RCE vulnerability, CVE-2024-49112, impacts Windows 10 Version 1809 for both x64 and 32-bit systems, emphasizing the need for updates across multiple Windows versions.
Elevation of Privilege Vulnerabilities
Elevation of Privilege vulnerabilities are particularly concerning as they allow attackers to gain unauthorized access to higher levels of system control. This update addresses several critical EoP flaws, including:
- CVE-2024-49138: Affects Windows 11 Version 22H2 and Windows 10 Version 21H2 across various architectures.
- CVE-2024-49110: Affects Windows Server 2025, Windows 11 Version 24H2, and other platforms.
- CVE-2024-49077: Affects Windows Server 2022 23H2 Edition and Windows 11 Version 23H2 systems.
Additionally, CVE-2024-49081 and CVE-2024-49138 address Elevation of Privilege risks in Windows 10 Version 22H2 and Windows 21H2, respectively.
For Windows Server, multiple versions were patched for both RCE and EoP vulnerabilities, including critical issues affecting Windows Server 2025, Windows Server 2022, and Windows Server 2008.
Affected Platforms
The December updates impact a wide range of Windows platforms, from modern operating systems like Windows 11 and Windows 10 to older systems such as Windows Server 2008 and various Windows Server variants. Whether you’re using personal devices or managing enterprise servers, these patches are essential to safeguard your systems from cyber threats.
Why You Need to Apply These Patches
With cyberattacks becoming more sophisticated, it’s critical to address vulnerabilities like RCE and EoP flaws as soon as possible. Applying these patches will help you mitigate the risk of exploitation and ensure that your systems remain secure.
To protect your systems, make sure to apply these updates immediately through Windows Update or your preferred deployment tools. For more details, visit Microsoft’s official security update documentation.
