PT-2020-4328 · Microsoft · Sharepoint Server+1

Published 2020-10-13 · Updated 2025-09-09 · CVE-2020-16952

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Microsoft SharePoint Server (affected versions not specified) Microsoft SharePoint Foundation (affected versions not specified) Microsoft SharePoint Enterprise Server (affected versions not specified)

Description: A remote code execution issue exists in Microsoft SharePoint due to the software's failure to properly check the source markup of an application package. This could allow an attacker to run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account. Exploitation requires a user to upload a specially crafted SharePoint application package to an affected version of SharePoint.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Origin Validation Error

Weakness Enumeration

CWE-20

CWE-346

Related Identifiers

BDU:2020-04828

BDU:2020-05448

CVE-2020-16952

Affected Products

Sharepoint Server

Sharepoint Foundation

References · 14

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/sharepoint_ssi_viewstate.rb · Exploit
• 🔥 http://packetstormsecurity.com/files/159612/Microsoft-SharePoint-SSI-ViewState-Remote-Code-Execution.html · Exploit
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16952 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-16952 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-04828 · Security Note
• https://bdu.fstec.ru/vul/2020-05448 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16952 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-16952 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-16952 · Security Note
• https://t.me/ckure/5791 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2020101333 · Note
• https://t.me/avleonovcom/821 · Telegram Post
• https://t.me/cybersecuritytechnologies/1913 · Telegram Post
• https://t.me/hybgl/506 · Telegram Post