CVE-2023-33157

CVE-2023-33157 is a critical vulnerability that affects the on-premises SharePoint Server. This flaw in software design or implementation can potentially lead to information leaks. However, for an attacker to exploit this vulnerability, they must already possess elevated privileges. Alongside CVE-2023-33157, another critical-rated vulnerability, CVE-2023-33160, also impacts the SharePoint Server. These vulnerabilities were part of a set of updates released by Microsoft, which included two other bugs rated as "important" - CVE-2023-33134 and CVE-2023-33159. Despite the presence of these significant vulnerabilities, the most pressing issue was identified as CVE-2023-36884, an Office and HTML Remote Code Execution (RCE) Vulnerability. In total, Microsoft released 14 updates rated important and two critical-rated updates for SharePoint. To address these vulnerabilities, particularly the critical ones like CVE-2023-33157 and CVE-2023-33160, users are advised to apply the necessary patches and updates as soon as possible. The potential for information leakage from the SharePoint Server underscores the urgency to rectify these issues promptly. It's also crucial to maintain a secure system with appropriate user privilege levels to reduce the chances of exploitation.