cnvd - cnvd-2020-68843

CNVD-2020-68843

Vulnerability from cnvd - Published: 2020-12-04

Title

Microsoft Excel远程代码执行漏洞（CNVD-2020-68843）

Description

Microsoft Excel是美国微软（Microsoft）公司的一款Office套件中的电子表格处理软件。 Microsoft Excel存在安全漏洞，攻击者可利用漏洞在当前用户的上下文中运行任意代码。

Severity

中

Patch Name

Microsoft Excel远程代码执行漏洞（CNVD-2020-68843）的补丁

Patch Description

Microsoft Excel是美国微软（Microsoft）公司的一款Office套件中的电子表格处理软件。 Microsoft Excel存在安全漏洞，攻击者可利用漏洞在当前用户的上下文中运行任意代码。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： https://portal.msrc.microsoft.com/en-us/security-guidance/releasenotedetail/2020-oct

Reference

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16931

Impacted products

Name
['Microsoft Excel 2010 SP2', 'Microsoft Excel 2013 SP1', 'Microsoft Office Web Apps 2013 SP1', 'Microsoft Excel 2016', 'Microsoft Office Online Server', 'Microsoft Office 2019', 'Microsoft Excel 2013 RT SP1', 'Microsoft 365 Apps']

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JSON

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-16931",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-16931"
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-68843",
  "openTime": "2020-12-04",
  "patchDescription": "Microsoft Excel\u662f\u7f8e\u56fd\u5fae\u8f6f\uff08Microsoft\uff09\u516c\u53f8\u7684\u4e00\u6b3eOffice\u5957\u4ef6\u4e2d\u7684\u7535\u5b50\u8868\u683c\u5904\u7406\u8f6f\u4ef6\u3002\r\n\r\nMicrosoft Excel\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5728\u5f53\u524d\u7528\u6237\u7684\u4e0a\u4e0b\u6587\u4e2d\u8fd0\u884c\u4efb\u610f\u4ee3\u7801\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Microsoft Excel\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\uff08CNVD-2020-68843\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Microsoft Excel 2010 SP2",
      "Microsoft Excel 2013 SP1",
      "Microsoft Office Web Apps 2013 SP1",
      "Microsoft Excel 2016",
      "Microsoft Office Online Server",
      "Microsoft Office 2019",
      "Microsoft Excel 2013 RT SP1",
      "Microsoft 365 Apps"
    ]
  },
  "referenceLink": "http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16931",
  "serverity": "\u4e2d",
  "submitTime": "2020-10-23",
  "title": "Microsoft Excel\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\uff08CNVD-2020-68843\uff09"
}

CVE-2020-16931 (GCVE-0-2020-16931)

Vulnerability from cvelistv5 – Published: 2020-10-16 22:17 – Updated: 2024-08-04 13:45

Summary

A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Excel. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) containing a specially crafted file designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file. The security update addresses the vulnerability by correcting how Microsoft Excel handles objects in memory.

Severity ?

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

CWE

Remote Code Execution

Assigner

microsoft

References

URL

Tags

	https://portal.msrc.microsoft.com/en-US/security-…	x_refsource_MISC
	https://www.zerodayinitiative.com/advisories/ZDI-…	x_refsource_MISC

Impacted products

Vendor

Product

Version

Microsoft

Microsoft Office 2019

Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*

Microsoft	Microsoft Office Online Server	Affected: 16.0.1 , < publication (custom) cpe:2.3:a:microsoft:office_online_server:-:::::::*
Microsoft	Microsoft 365 Apps for Enterprise	Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom) cpe:2.3:a:microsoft:365_apps:-::::enterprise:::
Microsoft	Microsoft Excel 2016	Affected: 16.0.0.0 , < publication (custom) cpe:2.3:a:microsoft:excel:2016::::::x86: cpe:2.3:a:microsoft:excel:2016::::::x64:
Microsoft	Microsoft Excel 2010 Service Pack 2	Affected: 13.0.0.0 , < publication (custom) cpe:2.3:a:microsoft:excel:2010:sp2::::::
Microsoft	Microsoft Excel 2013 Service Pack 1	Affected: 15.0.0.0 , < publication (custom) cpe:2.3:a:microsoft:excel:2013:sp1:::rt:::* cpe:2.3:a:microsoft:excel:2013:sp1:::::x86:* cpe:2.3:a:microsoft:excel:2013:sp1:::::x64:*
Microsoft	Microsoft Office Web Apps 2013 Service Pack 1	Affected: 15.0.0.0 , < publication (custom) cpe:2.3:a:microsoft:office_web_apps:2013:sp1::::::

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JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2020-68843

CVE-2020-16931 (GCVE-0-2020-16931)

Tags

Sightings

Nomenclature