Microsoft SharePoint WorkflowCompilerInternal Exposed Dangerous Function Remote Code Execution Vulnerability

2021-06-2300:00:00

Anonymous

www.zerodayinitiative.com

7.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

LOW

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

6.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

0.087 Low

EPSS

Percentile

94.4%

JSON

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft SharePoint. Authentication is required to exploit this vulnerability. The specific flaw exists within the System.Workflow.ComponentModel.Compiler.WorkflowCompilerInternal class. This class allows an attacker to specify a path to an arbitrary workflow definition file. An attacker can leverage this vulnerability to execute code in the context of the web service account.