CVE-2024-20674
published 2024-01-09CVE-2024-20674: Windows Kerberos Security Feature Bypass Vulnerability
PriorityP261high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
17.17%
96.7th percentile
Windows Kerberos Security Feature Bypass Vulnerability
Affected
41 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.20402 | 10.0.10240.20402 |
| microsoft | windows_10_1607 | < 10.0.14393.6614 | 10.0.14393.6614 |
| microsoft | windows_10_1809 | < 10.0.17763.5329 | 10.0.17763.5329 |
| microsoft | windows_10_21h2 | < 10.0.19044.3930 | 10.0.19044.3930 |
| microsoft | windows_10_22h2 | < 10.0.19045.3930 | 10.0.19045.3930 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.20402 | 10.0.10240.20402 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.6614 | 10.0.14393.6614 |
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.5329 | 10.0.17763.5329 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.5329 | 10.0.17763.5329 |
| microsoft | windows_10_version_21h2 | >= 10.0.19043.0 < 10.0.19044.3930 | 10.0.19044.3930 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.3930 | 10.0.19045.3930 |
| microsoft | windows_11_21h2 | < 10.0.22000.2713 | 10.0.22000.2713 |
| microsoft | windows_11_22h2 | < 10.0.22621.3007 | 10.0.22621.3007 |
| microsoft | windows_11_23h2 | < 10.0.22631.3007 | 10.0.22631.3007 |
| microsoft | windows_11_version_21h2 | >= 10.0.0 < 10.0.22000.2713 | 10.0.22000.2713 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.3007 | 10.0.22621.3007 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.3007 | 10.0.22631.3007 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.3007 | 10.0.22631.3007 |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.26910 | 6.1.7601.26910 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.22464 | 6.0.6003.22464 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.24664 | 6.2.9200.24664 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.21765 | 6.3.9600.21765 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.6614 | 10.0.14393.6614 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.5329 | 10.0.17763.5329 |
Detection & IOCsextracted from sources · hover to see the quote
snort↗
62847 – 62850 and 62854 – 62861
snort↗
300797 – 300802
- →CVE-2024-20674 requires an adjacent network position (attacker must be on the restricted/local network segment) to intercept Kerberos authentication messages — monitor for unexpected hosts on sensitive network segments attempting to impersonate KDCs. ↗
- →Exploitation involves a man-in-the-middle attack where the attacker spoofs the Kerberos authentication server — detect anomalous Kerberos AS-REP or TGS-REP responses originating from non-DC hosts. ↗
- →Attack vector includes convincing a victim to connect to an attacker-controlled SMB server — monitor for outbound SMB connections to non-standard or untrusted hosts, especially where Kerberos negotiation occurs. ↗
- →Post-exploitation enables credential harvesting and impersonation across Kerberos SSO-covered services — alert on unusual Kerberos ticket usage patterns or service ticket requests from unexpected source IPs. ↗
- →User interaction is triggered when a Windows client connects to a malicious server — monitor endpoint telemetry for client-initiated connections to rogue servers followed by Kerberos authentication attempts. ↗
- ·Exploitation is rated 'More Likely' by Microsoft but had not been observed in the wild at time of disclosure — prioritize patching but no confirmed in-the-wild IOCs are available. ↗
- ·Snort rules 62847–62850, 62854–62861, and Snort 3 rules 300797–300802 cover multiple January 2024 Patch Tuesday CVEs, not exclusively CVE-2024-20674 — validate rule applicability before deployment. ↗
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vendor_msrc8.8HIGH
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Microsoft
Windows Kerberos Security Feature Bypass Vulnerability
vendor_msrc·2024-01-09·CVSS 8.8
CVE-2024-20674 [HIGH] CWE-305 Windows Kerberos Security Feature Bypass Vulnerability
Windows Kerberos Security Feature Bypass Vulnerability
FAQ: According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
This vulnerability could be triggered when a user connects a Windows client to a malicious server.
FAQ: How could an attacker exploit this vulnerability?
When multiple attack vectors can be used, we assign a score based on the scenario with the higher risk. In one such scenario for this vulnerability, the attacker could convince a victim to connect to an attacker controlled malicious application (for example, SMB) server. Upon connecting, the malicious server could compromise the protocol.
FAQ: What kind of security feature could be bypassed by successfully exploiting this vulnerability?
The authentication feature coul
GHSA
GHSA-37gw-25xx-74f7: Windows Kerberos Security Feature Bypass Vulnerability
ghsa_unreviewed·2024-01-09
CVE-2024-20674 [CRITICAL] CWE-290 GHSA-37gw-25xx-74f7: Windows Kerberos Security Feature Bypass Vulnerability
Windows Kerberos Security Feature Bypass Vulnerability
No detection rules found.
No public exploits indexed.
Checkpoint
15th January – Threat Intelligence Report
blogs_checkpoint·2024-01-15
CVE-2023-46805 15th January – Threat Intelligence Report
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For the latest discoveries in cyber research for the week of 15th January, please download our Threat_Intelligence Bulletin .
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The ransomware-as-a-service group Medusa has breached Water for People nonprofit organization, which aims to improve access to clean water in different countries including Guatemala, Honduras, Mozambique and India. The cybercriminals are asking for a $300K extortion fee to not leak the stolen data. The organization says i
Qualys
Microsoft and Adobe Patch Tuesday, January 2024 Security Update Review
blogs_qualys·2024-01-09
Microsoft and Adobe Patch Tuesday, January 2024 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for January 2024
Adobe Patches for January 2024
Critical Severity Vulnerabilities Patched in January 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 withPolicy Compliance (PC)
Qualys Monthly Webinar Series
The first edition of the Microsoft Patch Tuesday for 2024 is now live! Microsoft has released fewer than usual security fixes in this month’s update. We invite you to join us to review and discuss the details of these security updates and patches.
## Microsoft Patch Tuesday for January 2024
Microsoft Patch Tuesday’s Ja
Trendmicro
The January 2024 Security Update Review
blogs_trendmicro·2024-01-09·CVSS 8.8
[HIGH] The January 2024 Security Update Review
# The January 2024 Security Update Review
Get the January 2024 security update and review.
By: Dustin Childs
2024/01/09
Read time: ( words)
Save to Folio
Welcome to the first patch Tuesday of 2024. As expected, Microsoft and Adobe have released their latest security patches. Take a break from your other activities and join us as we review the details of their latest advisories. If you’d rather watch the video recap, you can check it out here:
Adobe Patches for January 2024
For January, Adobe released a single patch addressing six CVEs in Substance 3D Stager. All six bugs are rated Important with the most severe allowing arbitrary code execution.
None of the bugs fixed by Adobe this month are listed as publicly known or under active attack at the time of release. Adobe categorizes t
Trendmicro
The January 2024 Security Update Review
blogs_trendmicro·2024-01-09·CVSS 9.1
[CRITICAL] The January 2024 Security Update Review
## The January 2024 Security Update Review
Get the January 2024 security update and review.
By: Dustin Childs Jan 09, 2024 Read time: ( words)
Save to Folio
Welcome to the first patch Tuesday of 2024. As expected, Microsoft and Adobe have released their latest security patches. Take a break from your other activities and join us as we review the details of their latest advisories. If you’d rather watch the video recap, you can check it out here:
CVE
Title
Severity
CVSS
Public
Exploited
Type
CVE-2024-20700
Windows Hyper-V Remote Code Execution Vulnerability
Critical
7.5
No
No
RCE
CVE-2024-20674
Windows Kerberos Security Feature Bypass Vulnerability
Critical
9
No
No
SFB
CVE-2024-0057
.NET and Visual Studio Framework Security Feature Bypass Vulnerability
Important
Trendmicro
The January 2024 Security Update Review
blogs_trendmicro·2024-01-09·CVSS 9.1
[CRITICAL] The January 2024 Security Update Review
## The January 2024 Security Update Review
Get the January 2024 security update and review.
By: Dustin Childs 2024/01/09 Read time: ( words)
Save to Folio
Welcome to the first patch Tuesday of 2024. As expected, Microsoft and Adobe have released their latest security patches. Take a break from your other activities and join us as we review the details of their latest advisories. If you’d rather watch the video recap, you can check it out here:
CVE
Title
Severity
CVSS
Public
Exploited
Type
CVE-2024-20700
Windows Hyper-V Remote Code Execution Vulnerability
Critical
7.5
No
No
RCE
CVE-2024-20674
Windows Kerberos Security Feature Bypass Vulnerability
Critical
9
No
No
SFB
CVE-2024-0057
.NET and Visual Studio Framework Security Feature Bypass Vulnerability
Important
8
Bleepingcomputer
Microsoft January 2024 Patch Tuesday fixes 49 flaws, 12 RCE bugs
blogs_bleepingcomputer·2024-01-09·CVSS 8.8
[HIGH] Microsoft January 2024 Patch Tuesday fixes 49 flaws, 12 RCE bugs
## Microsoft January 2024 Patch Tuesday fixes 49 flaws, 12 RCE bugs
## Lawrence Abrams
10 Elevation of Privilege Vulnerabilities
7 Security Feature Bypass Vulnerabilities
12 Remote Code Execution Vulnerabilities
11 Information Disclosure Vulnerabilities
6 Denial of Service Vulnerabilities
3 Spoofing Vulnerabilities
The total count of 49 flaws does not include 4 Microsoft Edge flaws fixed on January 5th.
To learn more about the non-security updates released today, you can review our dedicated articles on the new Windows 11 KB5034123 cumulative update and Windows 10 KB5034122 update .
## This month's interesting flaws
While there were no actively exploited or publicly disclosed vulnerabilities this month, some flaws are more interesting than others.
Microsoft fixes an Office Remo
Trendmicro
The January 2024 Security Update Review
blogs_trendmicro·2024-01-09·CVSS 9.1
[CRITICAL] The January 2024 Security Update Review
## The January 2024 Security Update Review
Get the January 2024 security update and review.
By: Dustin Childs Jan 09, 2024 Read time: ( words)
Save to Folio
Welcome to the first patch Tuesday of 2024. As expected, Microsoft and Adobe have released their latest security patches. Take a break from your other activities and join us as we review the details of their latest advisories. If you’d rather watch the video recap, you can check it out here:
CVE
Title
Severity
CVSS
Public
Exploited
Type
CVE-2024-20700
Windows Hyper-V Remote Code Execution Vulnerability
Critical
7.5
No
No
RCE
CVE-2024-20674
Windows Kerberos Security Feature Bypass Vulnerability
Critical
9
No
No
SFB
CVE-2024-0057
.NET and Visual Studio Framework Security Feature Bypass Vulnerability
Important
Talos
Microsoft starts off new year with relatively light Patch Tuesday, no zero-days
blogs_talos·2024-01-09·CVSS 8.8
[HIGH] Microsoft starts off new year with relatively light Patch Tuesday, no zero-days
## Microsoft starts off new year with relatively light Patch Tuesday, no zero-days
Microsoft followed up one of the lightest recent Patch Tuesdays in December with another month of no zero-day vulnerabilities and only two critical issues.
Many of the company’s monthly security updates in 2023 included vulnerabilities that were actively being exploited in the wild or had publicly available exploits already in circulation.
The company started out 2024 by disclosing 48 vulnerabilities on Tuesday across its suite of products and services, 46 of which are considered of “important” severity.
One of the critical vulnerabilities patched Tuesday is CVE-2024-20674 , a security bypass vulnerability in the Windows Kerberos authentication protocol. An attacker could carry out a man-in-the-middle at
Tenable
Microsoft’s January 2024 Patch Tuesday Addresses 48 CVEs (CVE-2024-20674)
blogs_tenable·2024-01-09·CVSS 8.8
[HIGH] Microsoft’s January 2024 Patch Tuesday Addresses 48 CVEs (CVE-2024-20674)
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Talos
Microsoft starts off new year with relatively light Patch Tuesday, no zero-days
blogs_talos·2024-01-09·CVSS 8.8
[HIGH] Microsoft starts off new year with relatively light Patch Tuesday, no zero-days
Microsoft followed up one of the lightest recent Patch Tuesdays in December with another month of no zero-day vulnerabilities and only two critical issues.
Many of the company’s monthly security updates in 2023 included vulnerabilities that were actively being exploited in the wild or had publicly available exploits already in circulation.
The company started out 2024 by disclosing 48 vulnerabilities on Tuesday across its suite of products and services, 46 of which are considered of “important” severity.
One of the critical vulnerabilities patched Tuesday is CVE-2024-20674, a security bypass vulnerability in the Windows Kerberos authentication protocol. An attacker could carry out a man-in-the-middle attack to exploit this vulnerability and spoof the Kerberos authentication server, ther
Qualys
Microsoft and Adobe Patch Tuesday, January 2024 Security Update Review | Qualys
blogs_qualys·2024-01-09
Microsoft and Adobe Patch Tuesday, January 2024 Security Update Review | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for January 2024
- Adobe Patches for January 2024
- Critical Severity Vulnerabilities Patched in January 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 withPolicy Compliance (PC)
- Qualys Monthly Webinar Series
The first edition of the Microsoft Patch Tuesday for 2024 is now live! Microsoft has released fewer than usual security fixes in this month’s update. We invite you to join us to review and discuss the details of these security updates and patches.
## Microsoft Patch Tuesday for January 2024
Microsoft Patch
Crowdstrike
January Patch Tuesday 2024: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] January Patch Tuesday 2024: Updates and Analysis
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2024-01-09
Published