SB2020090815 - Multiple vulnerabilities in Microsoft SharePoint Server
Published: September 8, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 10 vulnerabilities.
1) Input validation error (CVE-ID: CVE-2020-1460)
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 the Microsoft SharePoint Server fails to properly identify and filter unsafe ASP.Net web controls. A remote authenticated attacker can create and invoke a specially crafted page and execute arbitrary code on the target system.
2) Input validation error (CVE-ID: CVE-2020-1452)
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:H/SI:H/SA:H/E:U/U:Green
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to the affected software fails to check the source markup of an application package. A remote authenticated attacker can upload a specially crafted SharePoint application package and execute arbitrary code on the system.
3) Input validation error (CVE-ID: CVE-2020-1453)
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:H/SI:H/SA:H/E:U/U:Green
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to the affected software fails to check the source markup of an application package. A remote authenticated attacker can upload a specially crafted SharePoint application package and execute arbitrary code on the system.
4) Input validation error (CVE-ID: CVE-2020-1576)
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:H/SI:H/SA:H/E:U/U:Green
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to the affected software fails to check the source markup of an application package. A remote authenticated attacker can upload a specially crafted SharePoint application package and execute arbitrary code on the system.
5) Input validation error (CVE-ID: CVE-2020-1200)
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:H/SI:H/SA:H/E:U/U:Green
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to the affected software fails to check the source markup of an application package. A remote authenticated attacker can upload a specially crafted SharePoint application package and execute arbitrary code on the system.
6) Spoofing attack (CVE-ID: CVE-2020-1205)
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:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data. A remote authenticated attacker can send a specially crafted request and spoof page content.
7) Input validation error (CVE-ID: CVE-2020-1210)
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:H/SI:H/SA:H/E:U/U:Green
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to the affected software fails to check the source markup of an application package. A remote authenticated attacker can upload a specially crafted SharePoint application package and execute arbitrary code on the system.
8) Input validation error (CVE-ID: CVE-2020-1440)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:U/U:Green
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the Microsoft SharePoint Server fails to properly handle profile data. A remote authenticated attacker can send a specially modified request to the server and modify a targeted user's profile data.
9) Input validation error (CVE-ID: CVE-2020-1523)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:U/U:Green
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the Microsoft SharePoint Server fails to properly handle profile data. A remote authenticated attacker can send a specially modified request to the server and modify a targeted user's profile data.
10) Input validation error (CVE-ID: CVE-2020-1595)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H/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 Microsoft SharePoint. A remote authenticated attacker can pass specially crafted input to the application and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1460
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1452
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1453
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1576
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1200
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1205
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1210
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1440
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1523
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1595