External risk intelligence

Microsoft SharePoint Remote Code Execution Vulnerability.

CVE advisoryKnown Exploit

CVE-2024-38094

A deserialization vulnerability in Microsoft SharePoint Server could permit remote code execution by authenticated attackers. This impacts confidentiality, integrity, and availability, posing a significant business risk. Its inclusion on the CISA Known Exploited Vulnerabilities catalog indicates a need for immediate ac

4Halo Surface Signal

Deserialization

Microsoft Sharepoint Server

20162019

External exposure likelihood

Halo Surface Signal score for CVE-2024-38094

Microsoft SharePoint is commonly deployed as an internet-facing web application or collaboration portal. While administrative access may be restricted, the product is frequently exposed to the public internet to facilitate remote access for users and external partners, making it a common internet-facing service.

Horizon Alert

Summary of the vulnerability and why it matters

Microsoft SharePoint Server is affected by a deserialization vulnerability. This flaw allows an authenticated attacker to execute remote code within the affected environment. The potential business impact includes unauthorized access to sensitive data, disruption of services, and the compromise of system integrity.

Vulnerable component: Microsoft SharePoint Server.
Core weakness: Deserialization flaw.
Main business impact: Remote code execution.

Attack Path

How an attacker could exploit the issue

A deserialization vulnerability in Microsoft SharePoint Server allows an unauthenticated attacker to execute remote code. Attackers can leverage this vulnerability to gain control over affected systems. The potential impact includes unauthorized data access, system disruption, and further compromise of the network.

Exposure: Internet-facing SharePoint Server.
Attacker access: Unauthenticated.
Trigger and result: Remote code execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in Microsoft SharePoint Server could allow attackers to execute code remotely. Exploitation may result in unauthorized access to sensitive data and disruption of services. Given the potential for significant business impact, organizations should prioritize addressing this vulnerability.

Attackers require administrative privileges.
Exploitation occurs over the network.
Business risk is high.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in Microsoft SharePoint Server could allow attackers to execute remote code, posing a significant risk to affected organizations. The exploitability of this issue is high, impacting the confidentiality, integrity, and availability of data and systems. Given its inclusion in the CISA Known Exploited Vulnerabilities catalog, immediate action is warranted to protect the organization.

Identify all SharePoint Server assets.
Reduce exposure or isolate affected systems.
Apply vendor fixes and validate.
Monitor for related security issues.

Frequently asked questions

What is the nature of the Microsoft SharePoint Server vulnerability CVE-2024-38094?

CVE-2024-38094 is a remote code execution vulnerability in Microsoft SharePoint Server, stemming from a deserialization flaw. This weakness allows an authenticated attacker to execute arbitrary code on the affected server, leading to potential data breaches and service disruptions.

How can the CVE-2024-38094 vulnerability be exploited, and what is its impact?

An authenticated attacker can exploit this deserialization vulnerability over the network to execute remote code. This can lead to unauthorized access to sensitive data, disruption of services, and compromise of system integrity. The vulnerability affects SharePoint Server subscription editions, 2016 enterprise, and 2019.

What is the threat advisory for CVE-2024-38094 in Microsoft SharePoint?

Microsoft SharePoint Server is affected by a deserialization vulnerability, identified as CVE-2024-38094, which allows for remote code execution. This vulnerability is listed on the CISA Known Exploited Vulnerabilities catalog, indicating a significant and active threat.

What is the relevance of CVE-2024-38094 to organizations using Microsoft SharePoint?

This vulnerability is highly relevant as it allows remote code execution in Microsoft SharePoint Server. Its inclusion in the CISA KEV catalog signifies a critical threat that requires immediate attention to prevent exploitation and mitigate potential business impact, such as data breaches and service outages.

What practical steps should be taken to address the Microsoft SharePoint vulnerability CVE-2024-38094?

Organizations should identify all affected Microsoft SharePoint Server assets, reduce their exposure, and isolate any vulnerable systems. Applying vendor-provided fixes and validating their implementation is crucial. Continuous monitoring for related security issues is also recommended to ensure comprehensive protection.

References

Written by Nicholas Merritt

External-surface CVE analysis and Halo Surface Signal prioritization for Halo Threat Intelligence.