Microsoft SharePoint InfoPath List Deserialization of Untrusted Data Remote Code Execution Vulnerability
March 11th, 2021
Vulnerability Details
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft SharePoint Server. Authentication is required to exploit this vulnerability.
The specific flaw exists within the processing of InfoPath attachments. Tampering with client-side data can trigger the deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the SharePoint web server process.
Additional Details
Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27076
Disclosure Timeline
- 2020-10-28 - Vulnerability reported to vendor
- 2021-03-11 - Coordinated public release of advisory
Credit
Anonymous
