CVE-2018-8504
published 2018-10-10CVE-2018-8504: A remote code execution vulnerability exists in Microsoft Word software when the software fails to properly handle objects in Protected View, aka "Microsoft…
PriorityP260high8.8CVSS 3.0
AVNACLPRNUIRSUCHIHAH
EPSS
18.67%
96.9th percentile
A remote code execution vulnerability exists in Microsoft Word software when the software fails to properly handle objects in Protected View, aka "Microsoft Word Remote Code Execution Vulnerability." This affects Microsoft SharePoint Server, Office 365 ProPlus, Microsoft Office, Microsoft Word.
Affected
43 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_office | — | — |
| microsoft | microsoft_office | — | — |
| microsoft | microsoft_office | — | — |
| microsoft | microsoft_office | — | — |
| microsoft | microsoft_office | — | — |
| microsoft | microsoft_office | — | — |
| microsoft | microsoft_office | — | — |
| microsoft | microsoft_office | — | — |
| microsoft | microsoft_office | — | — |
| microsoft | microsoft_office | — | — |
| microsoft | microsoft_sharepoint_server | — | — |
| microsoft | microsoft_word | — | — |
| microsoft | microsoft_word | — | — |
| microsoft | microsoft_word | — | — |
| microsoft | microsoft_word | — | — |
| microsoft | microsoft_word | — | — |
| microsoft | microsoft_word | — | — |
| microsoft | microsoft_word | — | — |
| microsoft | office | — | — |
| microsoft | office | — | — |
| microsoft | office | — | — |
| microsoft | office | — | — |
| microsoft | office | — | — |
| microsoft | office | — | — |
| microsoft | office_web_apps | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Attack vector requires a user to open a specially crafted file with an affected version of Microsoft Office Word; the Preview Pane is NOT an attack vector — detection should focus on file-open events, not preview actions. ↗
- →The vulnerability is triggered specifically when Microsoft Word fails to handle objects in Protected View — monitor for Word processes spawning child processes or executing code while a document is open in Protected View (PROTECTED_VIEW sandbox escape). ↗
- →Email-based delivery is a primary attack scenario — hunt for Word documents delivered as email attachments that trigger Protected View, followed by anomalous child process creation under WINWORD.EXE. ↗
- →Web-based delivery is a secondary attack scenario — monitor for WINWORD.EXE spawned from browser processes opening a specially crafted file hosted on attacker-controlled or compromised websites. ↗
- →Exploitation likelihood is rated 'More Likely' for both latest and older software releases — prioritise detection and patching across all supported Office versions. ↗
- ·The Preview Pane is explicitly NOT an attack vector; detection rules that fire on preview-pane activity will produce false positives for this CVE. ↗
- ·Affected products span multiple Office families (SharePoint Server, Office 365 ProPlus / Click-to-Run, Microsoft Office, Microsoft Word) — ensure detection and patch coverage is not scoped only to standalone Word installs. ↗
- ·As of the advisory publication date, the vulnerability had NOT been publicly disclosed or exploited in the wild, but exploitation was rated 'More Likely' — treat as high-priority pre-emptive detection. ↗
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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GHSA
GHSA-cr8x-g9hm-h8c5: A remote code execution vulnerability exists in Microsoft Word software when the software fails to properly handle objects in Protected View, aka "Mic
ghsa_unreviewed·2022-05-13
CVE-2018-8504 [HIGH] GHSA-cr8x-g9hm-h8c5: A remote code execution vulnerability exists in Microsoft Word software when the software fails to properly handle objects in Protected View, aka "Mic
A remote code execution vulnerability exists in Microsoft Word software when the software fails to properly handle objects in Protected View, aka "Microsoft Word Remote Code Execution Vulnerability." This affects Microsoft SharePoint Server, Office 365 ProPlus, Microsoft Office, Microsoft Word.
Microsoft
Microsoft Word Remote Code Execution Vulnerability
vendor_msrc·2018-10-09·CVSS 8.8
CVE-2018-8504 [HIGH] Microsoft Word Remote Code Execution Vulnerability
Microsoft Word Remote Code Execution Vulnerability
Description: A remote code execution vulnerability exists in Microsoft Word software when the software fails to properly handle objects in Protected View. 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 fi
No detection rules found.
No public exploits indexed.
Talos
Microsoft Patch Tuesday — October 18: Vulnerability disclosures and Snort coverage
blogs_talos·2018-10-09·CVSS 7.5
[HIGH] Microsoft Patch Tuesday — October 18: Vulnerability disclosures and Snort coverage
Microsoft released its monthly security update today, disclosing a variety of vulnerabilities in several of its products. The latest Patch Tuesday covers 49 vulnerabilities, 12 of which are rated "critical," 34 that are rated "important,” two that are considered to have “moderate” severity and one that’s rated as “low.”
The advisories cover bugs in the Chakra scripting engine, the Microsoft Edge internet browser and the Microsoft Office suite of products, among other software.
This update also includes a critical advisory that covers updates to the Microsoft Office suite of products.
Please visit the SNORTⓇ blog here if you would like to know more about the coverage we have for these vulnerabilities.
Critical vulnerabilities
Microsoft has disclosed 12 critical vulnerabilities this mont
Talos
Microsoft Patch Tuesday — October 18: Vulnerability disclosures and Snort coverage
blogs_talos·2018-10-09·CVSS 7.5
[HIGH] Microsoft Patch Tuesday — October 18: Vulnerability disclosures and Snort coverage
## Microsoft Patch Tuesday — October 18: Vulnerability disclosures and Snort coverage
Microsoft released its monthly security update today, disclosing a variety of vulnerabilities in several of its products. The latest Patch Tuesday covers 49 vulnerabilities, 12 of which are rated "critical," 34 that are rated "important,” two that are considered to have “moderate” severity and one that’s rated as “low.”
The advisories cover bugs in the Chakra scripting engine, the Microsoft Edge internet browser and the Microsoft Office suite of products, among other software.
This update also includes a critical advisory that covers updates to the Microsoft Office suite of products .
Please visit the SNORTⓇ blog here if you would like to know more about the coverage we have for these vulnerabilities.
http://www.securityfocus.com/bid/105499http://www.securitytracker.com/id/1041840https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8504http://www.securityfocus.com/bid/105499http://www.securitytracker.com/id/1041840https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8504
2018-10-10
Published