#VU77225 Improper Authentication in Microsoft SharePoint Server - CVE-2023-29357
Published: June 13, 2023 / Updated: June 21, 2024
Vulnerability identifier: #VU77225
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber
CVE-ID: CVE-2023-29357
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
Microsoft SharePoint Server
Microsoft SharePoint Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error within the ValidateTokenIssuer method. A remote attacker can bypass authentication process and gain unauthorized access to the application.
Remediation
Install updates from vendor's website.