Multiple vulnerabilities in Microsoft SharePoint Server
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2023-33142 CVE-2023-29357 CVE-2023-33130 CVE-2023-33132 |
| CWE-ID | CWE-264 CWE-287 CWE-451 |
| Exploitation vector | Network |
| Public exploit | Vulnerability #2 is being exploited in the wild. |
| Vulnerable software |
Microsoft SharePoint Server Server applications / Application servers Microsoft SharePoint Server Subscription Edition Server applications / Application servers |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU77222
Risk: Medium
CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2023-33142
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions in Microsoft SharePoint Server. A remote user can create a list or document library in the targeted SharePoint site.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2019
Microsoft SharePoint Server Subscription Edition: All versions
CPE2.3- cpe:2.3:a:microsoft:microsoft_sharepoint_server:2019:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_sharepoint_server_subscription_edition:*:*:*:*:*:*:*:*
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-33142
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Improper Authentication
EUVDB-ID: #VU77225
Risk: High
CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]
CVE-ID: CVE-2023-29357
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error within the ValidateTokenIssuer method. A remote attacker can bypass authentication process and gain unauthorized access to the application.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2019
CPE2.3 External linkshttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-29357
https://www.zerodayinitiative.com/advisories/ZDI-23-882/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
3) Spoofing attack
EUVDB-ID: #VU77224
Risk: Medium
CVSSv4.0: 5.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2023-33130
CWE-ID:
CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data in Microsoft SharePoint Server. A remote user can spoof page content.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2019
Microsoft SharePoint Server Subscription Edition: All versions
CPE2.3- cpe:2.3:a:microsoft:microsoft_sharepoint_server:2019:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_sharepoint_server_subscription_edition:*:*:*:*:*:*:*:*
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-33130
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Spoofing attack
EUVDB-ID: #VU77223
Risk: Medium
CVSSv4.0: 4.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2023-33132
CWE-ID:
CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data in Microsoft SharePoint Server. A remote user can spoof page content.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2019
Microsoft SharePoint Server Subscription Edition: All versions
CPE2.3- cpe:2.3:a:microsoft:microsoft_sharepoint_server:2019:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_sharepoint_server_subscription_edition:*:*:*:*:*:*:*:*
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-33132
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
