In the dynamic landscape of cybersecurity, staying updated with the latest vulnerabilities is crucial for maintaining robust security defenses. This week has witnessed the emergence of several high-risk Common Vulnerabilities and Exposures (CVEs) that demand immediate attention and action. This article highlights the most recent and high-risk CVEs for January 2024, their impacts, and recommended actions.
January 2024: Critical Risk CVE Direct Links
CVE-2023-29357: CISA Alert for CVE-2023-29357
CVE-2024-0057: NIST National Vulnerability Database - CVE-2024-0057
CVE-2024-20674: Microsoft Security Update Guide - CVE-2024-20674
CVE-2024-0193: NIST National Vulnerability Database - CVE-2024-0193
CVE-2023-46805: Ivanti Connect Secure and Policy Secure CVE-2023-46805
CVE-2024-21887: Ivanti Connect Secure and Policy Secure CVE-2024-21887
Microsoft SharePoint Server Vulnerability: CVE-2023-29357
Overview: CVE-2023-29357 is a critical vulnerability in Microsoft SharePoint Server that has been added to the Cybersecurity and Infrastructure Security Agency's (CISA) Known Exploited Vulnerabilities Catalog due to active exploitation evidence.
Impact: This vulnerability allows for privilege escalation, enabling attackers to gain elevated access to affected systems.
Recommended Action: Organizations using Microsoft SharePoint Server should urgently review and apply necessary security patches to mitigate this risk.
.NET Framework: Visual Studio Security Flaw: CVE-2024-0057
Overview: CVE-2024-0057 is a significant security feature bypass vulnerability affecting Microsoft's .NET, .NET Framework, and Visual Studio.
Impact: With a CVSS score of 9.1, this vulnerability poses a substantial threat to the security of applications and systems built on these Microsoft frameworks.
Recommended Action: Immediate updates and security reviews are recommended for all systems utilizing these Microsoft frameworks.
Windows Kerberos Security Feature Bypass: CVE-2024-20674
Overview: CVE-2024-20674 is a critical vulnerability in Windows Kerberos, an authentication protocol.
Impact: Rated with a CVSSv3 score of 9.0, this flaw can be exploited to bypass security features, posing a serious threat to system integrity and security.
Recommended Action: Windows system administrators should prioritize the deployment of available patches and monitor for any related security advisories.
Linux Kernel Netfilter Subsystem Flaw: CVE-2024-0193
Overview: CVE-2024-0193 exposes a use-after-free flaw in the Linux kernel's netfilter subsystem.
Impact: This vulnerability could enable local unprivileged users to escalate their privileges on affected systems.
Recommended Action: Linux users should apply the latest kernel updates and ensure all security measures are up to date.
Zero-Day Vulnerabilities in Ivanti Gateways: CVE-2023-46805 and CVE-2024-21887
Overview: Two severe zero-day vulnerabilities, CVE-2023-46805 and CVE-2024-21887, have been discovered in Ivanti Connect Secure and Policy Secure Gateways.
Impact: These vulnerabilities facilitate unauthenticated remote code execution, posing a high-security risk.
Recommended Action: Organizations using Ivanti products should immediately implement available mitigations and closely follow Ivanti's guidance for upcoming comprehensive patches.
Stay vigilant and secure!
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