Cloud Vulnerability DB
An open project to list all known cloud vulnerabilities and Cloud Service Provider security issues
Vulnerability DatabaseCVE-2023-29357
CVE-2023-29357:
vulnerability analysis and mitigation
Overview
Microsoft SharePoint Server Elevation of Privilege Vulnerability (CVE-2023-29357) is a critical security flaw with a CVSSv3 score of 9.8. The vulnerability was discovered and reported to Microsoft through the Zero Day Initiative (ZDI) by researcher Nguyễn Tiến Giang (Jang) from STAR Labs. This vulnerability was patched in Microsoft's June 2023 Patch Tuesday release (Tenable Blog).
Technical details
The vulnerability allows a remote, unauthenticated attacker to exploit the system by sending a spoofed JSON Web Token (JWT) authentication token to a vulnerable SharePoint server. When successfully exploited, the attacker can gain the privileges of an authenticated user on the target system without requiring any user interaction (Tenable Blog).
Impact
When exploited, this vulnerability allows an unauthenticated attacker to elevate their privileges to that of an authenticated user on the affected SharePoint Server. The critical CVSS score of 9.8 indicates the severe potential impact of this vulnerability on affected systems (Tenable Blog).
Mitigation and workarounds
Microsoft has released patches for this vulnerability as part of the June 2023 Patch Tuesday updates. Organizations are strongly encouraged to apply these security updates as soon as possible to protect against potential exploitation (Tenable Blog).
Additional resources
Source: This report was generated using AI
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