The SharePoint flaw first exploited in the wild in May continues to be exploited nine months after it was patched by Microsoft. Background On December 10, security researcher Kevin Beaumont published a tweet cautioning organizations to patch a Microsoft SharePoint flaw that’s been actively exploited in the wild since at least May, and has since remained a valuable asset to cybercriminals.

CVE-2019-0604: Critical Microsoft SharePoint Remote Code Execution Flaw Actively Exploited

A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-0594.

According to its self-reported version number, the Microsoft SharePoint application running on the remote host is affected by multiple vulnerabilities :

 - An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server.

 - A spoofing vulnerability exists in Microsoft SharePoint when the application does not properly parse HTTP content.

 - A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package.

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

The Microsoft Sharepoint Server installation on the remote host is missing a security update. It is, therefore, affected by the following vulnerabilities:

  - A cross-site-scripting (XSS) vulnerability exists when     Microsoft SharePoint Server does not properly sanitize a     specially crafted web request to an affected SharePoint     server. An authenticated attacker could exploit the     vulnerability by sending a specially crafted request to     an affected SharePoint server. The attacker who     successfully exploited the vulnerability could then     perform cross-site scripting attacks on affected systems     and run script in the security context of the current     user. The attacks could allow the attacker to read     content that the attacker is not authorized to read, use     the victim's identity to take actions on the SharePoint     site on behalf of the user, such as change permissions     and delete content, and inject malicious content in the     browser of the user. The security update addresses the     vulnerability by helping to ensure that SharePoint     Server properly sanitizes web requests. (CVE-2019-0778)

  - A remote code execution vulnerability exists in Microsoft     SharePoint when the software fails to check the source markup of     an application package. An attacker who successfully exploited     the vulnerability could run arbitrary code in the context of the     SharePoint application pool and the SharePoint server farm     account. Exploitation of this vulnerability requires that a user     uploads a specially crafted SharePoint application package to an     affected versions of SharePoint.(CVE-2019-0604)

The Microsoft Sharepoint Server installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :

  - An elevation of privilege vulnerability exists when     Microsoft SharePoint Server does not properly sanitize a     specially crafted web request to an affected SharePoint     server. An authenticated attacker could exploit the     vulnerability by sending a specially crafted request to     an affected SharePoint server. The attacker who     successfully exploited the vulnerability could then     perform cross-site scripting attacks on affected systems     and run script in the security context of the current     user. These attacks could allow the attacker to read     content that the attacker is not authorized to read, use     the victim's identity to take actions on the SharePoint     site on behalf of the user, such as change permissions     and delete content, and inject malicious content in the     browser of the user. The security update addresses the     vulnerability by helping to ensure that SharePoint     Server properly sanitizes web requests. (CVE-2019-0668)

  - A spoofing vulnerability exists in Microsoft SharePoint     when the application does not properly parse HTTP     content. An attacker who successfully exploited this     vulnerability could trick a user by redirecting the user     to a specially crafted website. The specially crafted     website could either spoof content or serve as a pivot     the chain an attach with other vulnerabilities in web     services.  (CVE-2019-0670)

  - A remote code execution vulnerability exists in     Microsoft SharePoint when the software fails to check     the source markup of an application package. An attacker     who successfully exploited the vulnerability could run     arbitrary code in the context of the SharePoint     application pool and the SharePoint server farm account.
    Exploitation of this vulnerability requires that a user     uploads a specially crafted SharePoint application     package to an affected versions of SharePoint. The     security update addresses the vulnerability by     correcting how SharePoint checks the source markup of     application packages. (CVE-2019-0594, CVE-2019-0604)

ID	Name	Product	Family	Severity
112368	Microsoft SharePoint Server 2019 build < 16.0.10341.20000 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	critical
112367	Microsoft SharePoint Server 2010 build < 14.0.7229.5000 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	critical
112366	Microsoft SharePoint Server 2013 build < 15.0.5111.1001 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	critical
112365	Microsoft SharePoint Server 2016 build < 16.0.4810.1000 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	critical
122859	Security Updates for Microsoft Sharepoint Server (March 2019)	Nessus	Windows : Microsoft Bulletins	critical
122155	Security Updates for Microsoft Sharepoint Server (February 2019)	Nessus	Windows : Microsoft Bulletins	critical

Detections

Analytics

CVE-2019-0604

critical

Tenable Plugins

critical

critical

critical

critical

critical

critical