cbcvebase.
CVE-2018-0841
published 2018-02-15

CVE-2018-0841: Microsoft Office 2016 Click-to-Run allows a remote code execution vulnerability due to how objects are handled in memory, aka "Office Remote Code Execution…

PriorityP359high8.8CVSS 3.0
AVNACLPRNUIRSUCHIHAH
EPSS
20.07%
97.4th percentile
Microsoft Office 2016 Click-to-Run allows a remote code execution vulnerability due to how objects are handled in memory, aka "Office Remote Code Execution Vulnerability"

Affected

4 ranges
VendorProductVersion rangeFixed in
microsoftoffice——
microsoft_corporationmicrosoft_office——
msrcmicrosoft_office_2016_click-to-run_for_32-bit_editions——
msrcmicrosoft_office_2016_click-to-run_for_64-bit_editions——

Detection & IOCsextracted from sources · hover to see the quote

  • →Attack vector requires a user to open a specially crafted Microsoft Excel file; monitor for suspicious Excel file opens, particularly from email attachments or files downloaded from the web. ↗
  • →In email-based attacks, the malicious Excel file is delivered as an attachment; inspect email gateways for Excel files (.xlsx, .xls, .xlsm, etc.) from untrusted senders. ↗
  • →In web-based attacks, the crafted Excel file may be hosted on a compromised or attacker-controlled website; monitor web proxy logs for Excel file downloads from suspicious or newly-registered domains. ↗
  • →Scope detection to Microsoft Office 2016 Click-to-Run installations; unpatched instances are assessed 'Exploitation More Likely' by Microsoft. ↗
  • ·Affected product is specifically Microsoft Office 2016 Click-to-Run; other Office delivery mechanisms or versions are listed as N/A for older software release exploitation likelihood. ↗
  • ·As of the advisory, the vulnerability had not been publicly exploited in the wild, though Microsoft rated it 'Exploitation More Likely' for the latest software release. ↗
  • ·Impact is scoped to the privilege level of the current user; systems where users run with administrative rights face the highest risk of full system compromise. ↗

CVSS provenance

nvdv3.08.8HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.09.3CRITICALAV:N/AC:M/Au:N/C:C/I:C/A:C
vendor_msrc8.8HIGH
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