SB2023071179 - Multiple vulnerabilities in Microsoft SharePoint Server

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Main Vulnerability Database SB2023071179

SB2023071179 - Multiple vulnerabilities in Microsoft SharePoint Server

Published: July 11, 2023

Security Bulletin ID SB2023071179
CSH Severity
High
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 25% Medium 50% Low 25%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Input validation error (CVE-ID: CVE-2023-33134)

CWE-ID: CWE-20 - Improper input validation

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:U/U:Green


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 Server. A remote user can pass specially crafted input to the application and execute arbitrary code on the target system.


2) Security features bypass (CVE-ID: CVE-2023-33165)

CWE-ID: CWE-254 - Security Features

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


The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to security features bypass in Microsoft SharePoint Server. A remote user can download files without the access being logged.


3) Input validation error (CVE-ID: CVE-2023-33160)

CWE-ID: CWE-20 - Improper input validation

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:U/U:Green


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

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


4) Spoofing attack (CVE-ID: CVE-2023-33159)

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

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


The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in the Microsoft SharePoint Server. A remote attacker can spoof page content.


Remediation

Install update from vendor's website.

References