Remote code execution in Microsoft SharePoint

1) Input validation error

EUVDB-ID: #VU78177

Risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-33157

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insufficient validation of user-supplied input in the Microsoft SharePoint. A remote user can pass specially crafted input to the application and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft SharePoint Server: 2019

Microsoft SharePoint Server Subscription Edition: All versions

Microsoft SharePoint Enterprise Server: 2016

CPE2.3

• cpe:2.3:a:microsoft:microsoft_sharepoint_server:2019:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_sharepoint_server_subscription_edition:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:microsoft_sharepoint_enterprise_server:2016:*:*:*:*:*:*:*

External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33157

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.