CVE-2023-24950
published 2023-05-09CVE-2023-24950: Microsoft SharePoint Server Spoofing Vulnerability
PriorityP352medium6.5CVSS 3.1
AVNACLPRLUINSUCHINAN
EPSS
67.45%
99.2th percentile
Microsoft SharePoint Server Spoofing Vulnerability
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_sharepoint_enterprise_server_2016 | >= 16.0.0 < 16.0.5395.1000 | 16.0.5395.1000 |
| microsoft | microsoft_sharepoint_server_2019 | >= 16.0.0 < 16.0.10398.20000 | 16.0.10398.20000 |
| microsoft | microsoft_sharepoint_server_subscription_edition | >= 16.0.0 < 16.0.16130.20420 | 16.0.16130.20420 |
| microsoft | sharepoint_enterprise_server | — | — |
| microsoft | sharepoint_server | — | — |
| msrc | microsoft_sharepoint_enterprise_server_2016 | — | — |
| msrc | microsoft_sharepoint_server_2019 | — | — |
| msrc | microsoft_sharepoint_server_subscription_edition | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →An attacker with site-creation privileges on a vulnerable SharePoint server can trigger the server to leak its NTLM hash over the network — monitor for outbound NTLM authentication attempts (e.g., SMB/HTTP) originating from the SharePoint server to unexpected external or internal hosts. ↗
- ·Exploitation is rated 'More Likely' for the latest software release, though no public exploit or active exploitation has been confirmed at time of advisory publication. ↗
- ·Customer action (patching) is explicitly required; the vulnerability affects Microsoft SharePoint Server and requires the attacker to already have site-creation privileges, limiting the attack surface to authenticated users. ↗
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
vendor_msrc6.5MEDIUM
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Microsoft
Microsoft SharePoint Server Spoofing Vulnerability
vendor_msrc·2023-05-09·CVSS 6.5
CVE-2023-24950 [MEDIUM] CWE-20 Microsoft SharePoint Server Spoofing Vulnerability
Microsoft SharePoint Server Spoofing Vulnerability
FAQ: How could an attacker exploit the vulnerability?
In a network-based attack an attacker who has privileges to create a site on a vulnerable SharePoint server could use this vulnerability to cause the server to leak its NTLM hash.
Microsoft Office SharePoint: Microsoft Office SharePoint
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Spoofing
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely;DOS:N/A
Reference: https://www.microsoft.com/download/details.aspx?familyid=7a299fb3-33f2-4417-809d-7bf31da6d14e
Reference: https://support.microsoft.com/help/5002397
Reference: https://www.microsoft.com/download/details.aspx?familyid=c9190144-e85b-4ded-9b6f-cc9b295054f3
Referenc
GHSA
GHSA-5j73-cmrw-hvh4: Microsoft SharePoint Server Spoofing Vulnerability
ghsa_unreviewed·2023-05-09
CVE-2023-24950 [MEDIUM] GHSA-5j73-cmrw-hvh4: Microsoft SharePoint Server Spoofing Vulnerability
Microsoft SharePoint Server Spoofing Vulnerability
No detection rules found.
No public exploits indexed.
Talos
Microsoft Patch Tuesday for May 2023 — Fewest vulnerabilities disclosed in a month in three-plus years
blogs_talos·2023-05-09·CVSS 9.8
[CRITICAL] Microsoft Patch Tuesday for May 2023 — Fewest vulnerabilities disclosed in a month in three-plus years
## Microsoft Patch Tuesday for May 2023 — Fewest vulnerabilities disclosed in a month in three-plus years
Microsoft disclosed 40 vulnerabilities across its suite of products and software Tuesday, the fewest the company’s included in a Patch Tuesday since December 2019.
However, two of the vulnerabilities is being actively exploited in the wild, according to Microsoft, the fourth month in a row in which this is the case for the monthly roundup of security issues.
In all, this Patch Tuesday includes seven critical vulnerabilities and 33 that are considered “important.”
One of the zero-day vulnerabilities included this month is CVE-2023-29336 , an elevation of privilege vulnerability in the Win32k kernel mode driver. An adversary could exploit this vulnerability to gain SYSTEM privileges.
Qualys
Microsoft and Adobe Patch Tuesday, May 2023 Security Update Review
blogs_qualys·2023-05-09
Microsoft and Adobe Patch Tuesday, May 2023 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for May 2023
Adobe Patches for May 2023
Zero-day Vulnerabilities Patched in May Patch Tuesday Edition
Other Critical Severity Vulnerabilities Patched in May Patch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities in Vulnerability Management, Detection & Response (VMDR)
Rapid Response with Patch Management (PM)
EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
EXECUTE Mitigation Using Qualys Custom Assessment and Remediation (CAR)
Qualys Monthly Webinar Series
This Month in Vulnerabilities & Patches
Microsoft has addressed 49 vulnerabilities in its May Patch Tuesday edition. The security advisories cover various vulnerabilities in different produc
Talos
Microsoft Patch Tuesday for May 2023 — Fewest vulnerabilities disclosed in a month in three-plus years
blogs_talos·2023-05-09·CVSS 9.8
[CRITICAL] Microsoft Patch Tuesday for May 2023 — Fewest vulnerabilities disclosed in a month in three-plus years
Microsoft disclosed 40 vulnerabilities across its suite of products and software Tuesday, the fewest the company’s included in a Patch Tuesday since December 2019.
However, two of the vulnerabilities is being actively exploited in the wild, according to Microsoft, the fourth month in a row in which this is the case for the monthly roundup of security issues.
In all, this Patch Tuesday includes seven critical vulnerabilities and 33 that are considered “important.”
One of the zero-day vulnerabilities included this month is CVE-2023-29336, an elevation of privilege vulnerability in the Win32k kernel mode driver. An adversary could exploit this vulnerability to gain SYSTEM privileges.
The most serious vulnerability disclosed Tuesday is CVE-2023-24941, a remote code execution vulnerability
Qualys
Microsoft Patch Tuesday, May 2023 Security Update Review | Qualys
blogs_qualys·2023-05-09
Microsoft Patch Tuesday, May 2023 Security Update Review | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for May 2023
- Adobe Patches for May 2023
- Zero-day Vulnerabilities Patched in May Patch Tuesday Edition
- Other Critical Severity Vulnerabilities Patched in May Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities in Vulnerability Management, Detection & Response (VMDR)
- Rapid Response with Patch Management (PM)
- EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
- EXECUTE Mitigation Using Qualys Custom Assessment and Remediation (CAR)
- Qualys Monthly Webinar Series
- This Month in Vulnerabilities & Patches
Microsoft has addressed 49 vulnerabilities in its May Patch Tuesday edition. The security advisories cover various vulnerabilities in d
2023-05-09
Published