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CVE-2020-16969— Microsoft Exchange Information Disclosure Vulnerability

Quick assessment

Affected
Microsoft Microsoft Exchange Server 2019 Cumulative Update 6
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 存在安全漏洞，该漏洞允许攻击者可以借此从用户获取详细信息。以下产品及版本受到影响： Microsoft Exchange Server 2013 Cumulative Update 23版本， Microsoft Exchange Server 2019 Cumulative Update 6版本，

CVSS 7.1 · High EPSS 2.73% · P85

Possible ATT&CK Techniques 1 AI

T1115 · Clipboard Data
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I. Basic Information for CVE-2020-16969

Vulnerability Information
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Vulnerability Title
Microsoft Exchange Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
<p>An information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages. An attacker who successfully exploited the vulnerability could use this to gain further information from a user.</p> <p>To exploit the vulnerability, an attacker could include specially crafted OWA messages that could be loaded, without warning or filtering, from the attacker-controlled URL. This callback vector provides an information disclosure tactic used in web beacons and other types of tracking systems.</p> <p>The security update corrects the way that Exchange handles these token validations.</p>
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
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 存在安全漏洞，该漏洞允许攻击者可以借此从用户获取详细信息。以下产品及版本受到影响： Microsoft Exchange Server 2013 Cumulative Update 23版本， Microsoft Exchange Server 2019 Cumulative Update 6版本，
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 6 15.02.0 ~ publication cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_6:*:*:*:*:*:*
Microsoft Microsoft Exchange Server 2016 Cumulative Update 17 15.01.0 ~ publication cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_17:*:*:*:*:*:*
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:*:*:*:*:*:*
Microsoft Microsoft Exchange Server 2013 Cumulative Update 23 15.00.0 ~ publication cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*

II. Public POCs for CVE-2020-16969

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III. Intelligence Information for CVE-2020-16969

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Vendor Advisories for CVE-2020-16969 (1)

Same Patch Batch · Microsoft · 2020-10-16 · 89 CVEs total

CVE-2020-1080 8.8 HIGH Windows Hyper-V Elevation of Privilege Vulnerability
CVE-2020-16898 8.8 HIGH Windows TCP/IP Remote Code Execution Vulnerability
CVE-2020-16911 8.8 HIGH GDI+ Remote Code Execution Vulnerability
CVE-2020-16891 8.8 HIGH Windows Hyper-V Remote Code Execution Vulnerability
CVE-2020-16946 8.7 HIGH Microsoft Office SharePoint XSS Vulnerability
CVE-2020-16945 8.7 HIGH Microsoft Office SharePoint XSS Vulnerability
CVE-2020-16944 8.7 HIGH Microsoft SharePoint Reflective XSS Vulnerability
CVE-2020-16952 8.6 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-16951 8.6 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-16939 7.8 HIGH Group Policy Elevation of Privilege Vulnerability
CVE-2020-16954 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2020-16936 7.8 HIGH Windows Backup Service Elevation of Privilege Vulnerability
CVE-2020-16935 7.8 HIGH Windows COM Server Elevation of Privilege Vulnerability
CVE-2020-16929 7.8 HIGH Microsoft Excel Remote Code Execution Vulnerability
CVE-2020-16928 7.8 HIGH Microsoft Office Click-to-Run Elevation of Privilege Vulnerability
CVE-2020-16924 7.8 HIGH Jet Database Engine Remote Code Execution Vulnerability
CVE-2020-16923 7.8 HIGH Microsoft Graphics Components Remote Code Execution Vulnerability
CVE-2020-16930 7.8 HIGH Microsoft Excel Remote Code Execution Vulnerability
CVE-2020-16940 7.8 HIGH Windows - User Profile Service Elevation of Privilege Vulnerability
CVE-2020-16957 7.8 HIGH Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability

Showing top 20 of 89 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft Exchange Server 2019 Cumulative Update 6
Same vendor: Microsoft

V. Comments for CVE-2020-16969

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