SB20230509101 - Multiple vulnerabilities in Microsoft SharePoint Server

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Main Vulnerability Database SB20230509101

SB20230509101 - Multiple vulnerabilities in Microsoft SharePoint Server

Published: May 9, 2023 Updated: March 26, 2024

Security Bulletin ID SB20230509101
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 33% Medium 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Code Injection (CVE-ID: CVE-2023-24955)

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

CVSSv4: 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:A/U:Amber


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

The vulnerability exists due to improper input validation within the GenerateProxyAssembly method. A remote privileged user can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


2) Spoofing attack (CVE-ID: CVE-2023-24950)

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

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


The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to incorrect processing of user-supplied within the implementation of the AdRotator WebControl. A remote user can perform NTLM relay attack and obtain credentials of the service account.


3) Information disclosure (CVE-ID: CVE-2023-24954)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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


The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output within the userphoto endpoint. A remote user can gain unauthorized access to sensitive information on the system.


Remediation

Install update from vendor's website.

References