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CVE-2023-21557— Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability

Quick assessment

Affected
Microsoft Windows 10 Version 1809
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Lightweight Directory Access Protocol（LDAP）是美国微软（Microsoft）公司的一种目录服务协议，在 TCP/IP 堆栈之上的层上运行。 Microsoft Lightweight Directory Access Protocol存在资源管理错误漏洞。攻击者利用该漏洞导致系统拒绝服务。

CVSS 7.5 · High EPSS 2.03% · P80

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-21557

Vulnerability Information
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Vulnerability Title
Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Lightweight Directory Access Protocol 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Lightweight Directory Access Protocol（LDAP）是美国微软（Microsoft）公司的一种目录服务协议，在 TCP/IP 堆栈之上的层上运行。 Microsoft Lightweight Directory Access Protocol存在资源管理错误漏洞。攻击者利用该漏洞导致系统拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows 10 Version 1809 10.0.17763.0 ~ 10.0.17763.3887 -
Microsoft Windows 10 Version 1809 10.0.0 ~ 10.0.17763.3887 -
Microsoft Windows Server 2019 10.0.17763.0 ~ 10.0.17763.3887 -
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 ~ 10.0.17763.3887 -
Microsoft Windows Server 2022 10.0.20348.0 ~ 10.0.20348.1487 -
Microsoft Windows 10 Version 20H2 10.0.0 ~ 10.0.19042.2486 -
Microsoft Windows 11 version 21H2 10.0.0 ~ 10.0.22000.1455 -
Microsoft Windows 10 Version 21H2 10.0.19043.0 ~ 10.0.19044.2486 -
Microsoft Windows 11 version 22H2 10.0.22621.0 ~ 10.0.22621.1105 -
Microsoft Windows 10 Version 22H2 10.0.19045.0 ~ 10.0.19045.2486 -
Microsoft Windows 10 Version 1507 10.0.10240.0 ~ 10.0.10240.19685 -
Microsoft Windows 10 Version 1607 10.0.14393.0 ~ 10.0.14393.5648 -
Microsoft Windows Server 2016 10.0.14393.0 ~ 10.0.14393.5648 -
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 ~ 10.0.14393.5648 -
Microsoft Windows 7 6.1.0 ~ 6.1.7601.26321 -
Microsoft Windows 7 Service Pack 1 6.1.0 ~ 6.1.7601.26321 -
Microsoft Windows 8.1 6.3.0 ~ 6.3.9600.20778 -
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 ~ 6.0.6003.21872 -
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 ~ 6.0.6003.21872 -
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 ~ 6.0.6003.21872 -
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 ~ 6.1.7601.26321 -
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 ~ 6.1.7601.26321 -
Microsoft Windows Server 2012 6.2.9200.0 ~ 6.2.9200.24075 -
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 ~ 6.2.9200.24075 -
Microsoft Windows Server 2012 R2 6.3.9600.0 ~ 6.3.9600.20778 -
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 ~ 6.3.9600.20778 -

II. Public POCs for CVE-2023-21557

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III. Intelligence Information for CVE-2023-21557

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Vendor Advisories for CVE-2023-21557 (1)

Same Patch Batch · Microsoft · 2023-01-10 · 98 CVEs total

CVE-2023-21732 8.8 HIGH Microsoft ODBC Driver Remote Code Execution Vulnerability
CVE-2023-21744 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2023-21549 8.8 HIGH Windows SMB Witness Service Elevation of Privilege Vulnerability
CVE-2023-21742 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2023-21674 8.8 HIGH Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
CVE-2023-21676 8.8 HIGH Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability
CVE-2023-21681 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2023-21679 8.1 HIGH Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability
CVE-2023-21555 8.1 HIGH Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability
CVE-2023-21556 8.1 HIGH Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability
CVE-2023-21548 8.1 HIGH Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability
CVE-2023-21546 8.1 HIGH Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability
CVE-2023-21543 8.1 HIGH Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability
CVE-2023-21535 8.1 HIGH Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability
CVE-2023-21745 8.0 HIGH Microsoft Exchange Server Spoofing Vulnerability
CVE-2023-21762 8.0 HIGH Microsoft Exchange Server Spoofing Vulnerability
CVE-2023-21793 7.8 HIGH 3D Builder Remote Code Execution Vulnerability
CVE-2023-21735 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2023-21734 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2023-21737 7.8 HIGH Microsoft Office Visio Remote Code Execution Vulnerability

Showing top 20 of 98 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1809
Same vendor: Microsoft
Same weakness: CWE-190

V. Comments for CVE-2023-21557

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