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CVE-2021-1730— Microsoft Exchange Server Spoofing Vulnerability

Quick assessment

Affected
Microsoft Microsoft Exchange Server 2019 Cumulative Update 7
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 Exchange Server是美国微软（Microsoft）公司的一套电子邮件服务程序。它提供邮件存取、储存、转发，语音邮件，邮件过滤筛选等功能。 Microsoft Exchange Server 中存在安全漏洞。以下产品和版本受到影响：Microsoft Exchange Server 2019 Cumulative Update 7,Microsoft Exchange Server 2016 Cumulative Update 18。

CVSS 5.4 · Medium EPSS 1.82% · P78

Possible ATT&CK Techniques 1 AI

T1613.001
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I. Basic Information for CVE-2021-1730

Vulnerability Information
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Vulnerability Title
Microsoft Exchange Server Spoofing Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
<p>A spoofing vulnerability exists in Microsoft Exchange Server which could result in an attack that would allow a malicious actor to impersonate the user.</p> <p>This update addresses this vulnerability.</p> <p>To prevent these types of attacks, Microsoft recommends customers to download inline images from different DNSdomains than the rest of OWA. Please see further instructions in the FAQ to put in place this mitigations.</p>
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Exchange Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Exchange Server是美国微软（Microsoft）公司的一套电子邮件服务程序。它提供邮件存取、储存、转发，语音邮件，邮件过滤筛选等功能。 Microsoft Exchange Server 中存在安全漏洞。以下产品和版本受到影响：Microsoft Exchange Server 2019 Cumulative Update 7,Microsoft Exchange Server 2016 Cumulative Update 18。
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 Microsoft Exchange Server 2019 Cumulative Update 7 15.02.0 ~ publication cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_7:*:*:*:*:*:*
Microsoft Microsoft Exchange Server 2016 Cumulative Update 18 15.01.0 ~ publication cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_18:*:*:*:*:*:*

II. Public POCs for CVE-2021-1730

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III. Intelligence Information for CVE-2021-1730

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Vendor Advisories for CVE-2021-1730 (1)

Same Patch Batch · Microsoft · 2021-02-25 · 58 CVEs total

CVE-2021-24077 9.8 CRITICAL Windows Fax Service Remote Code Execution Vulnerability
CVE-2021-24078 9.8 CRITICAL Windows DNS Server Remote Code Execution Vulnerability
CVE-2021-24074 9.8 CRITICAL Windows TCP/IP Remote Code Execution Vulnerability
CVE-2021-24094 9.8 CRITICAL Windows TCP/IP Remote Code Execution Vulnerability
CVE-2021-24088 8.8 HIGH Windows Local Spooler Remote Code Execution Vulnerability
CVE-2021-24066 8.8 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2021-24093 8.8 HIGH Windows Graphics Component Remote Code Execution Vulnerability
CVE-2021-24072 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2021-1728 8.8 HIGH System Center Operations Manager Elevation of Privilege Vulnerability
CVE-2020-17162 8.8 HIGH Microsoft Windows Security Feature Bypass Vulnerability
CVE-2021-24105 8.4 HIGH Package Managers Configurations Remote Code Execution Vulnerability
CVE-2021-1722 8.1 HIGH Windows Fax Service Remote Code Execution Vulnerability
CVE-2021-26701 8.1 HIGH .NET Core Remote Code Execution Vulnerability
CVE-2021-24112 8.1 HIGH .NET Core Remote Code Execution Vulnerability
CVE-2021-1726 8.0 HIGH Microsoft SharePoint Server Spoofing Vulnerability
CVE-2021-24083 7.8 HIGH Windows Address Book Remote Code Execution Vulnerability
CVE-2021-26700 7.8 HIGH Visual Studio Code npm-script Extension Remote Code Execution Vulnerability
CVE-2021-25195 7.8 HIGH Windows PKU2U Elevation of Privilege Vulnerability
CVE-2021-24103 7.8 HIGH Windows Event Tracing Elevation of Privilege Vulnerability
CVE-2021-24091 7.8 HIGH Windows Camera Codec Pack Remote Code Execution Vulnerability

Showing top 20 of 58 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same vendor: Microsoft

V. Comments for CVE-2021-1730

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