CVE-2018-8244

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CVE

An elevation of privilege vulnerability exists when Microsoft Outlook does not validate attachment headers properly, aka

An elevation of privilege vulnerability exists when Microsoft Outlook does not validate attachment headers properly, aka "Microsoft Outlook Elevation of Privilege Vulnerability." This affects Microsoft Office, Microsoft Outlook.

MEDIUM · CVSS 6.5 EPSS 0.16576

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EPSS ≥ 0.10 - elevated exploitation probability
EPSS percentile: top 5% of all CVEs by exploitation likelihood

Sigma rules16 YARA rules0

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Weakness Classification

CWE-20Improper Input Validation

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Affected Products & Versions

microsoft officeall versions
microsoft outlookall versions
microsoft outlook rtall versions

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Sigma Hunt Rules

Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.

producthighSuspicious Microsoft Office Child Process - MacOS

producthighCode Executed Via Office Add-in XLL File

producthighPotential Persistence Via Microsoft Office Add-In

producthighPotential Persistence Via Microsoft Office Startup Folder

producthighFile With Uncommon Extension Created By An Office Application

producthighOffice Macro File Creation From Suspicious Process

Show all 16 top matchesproducthighUncommon File Created In Office Startup Folder
producthighPotentially Suspicious Office Document Executed From Trusted Location
producthighSuspicious File Created in Outlook Temporary Directory
producthighSuspicious Outlook Macro Created
producthighPotential Persistence Via Outlook Form
producthighSuspicious Execution From Outlook Temporary Folder
producthighSuspicious Remote Child Process From Outlook
producthighSuspicious Outlook Child Process
producthighOutlook EnableUnsafeClientMailRules Setting Enabled
producthighPotential Persistence Via Outlook LoadMacroProviderOnBoot Setting

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Scoring & Timeline

6.5

MEDIUM · CVSS v3.0 · secure@microsoft.com

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD14 Jun 2018 · 12:29 PM

CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

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Vendor Advisories

msrcCVE-2018-8244Elevation of Privilege

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://www.securityfocus.com/bid/104323Third Party AdvisoryVDB Entry

http://www.securitytracker.com/id/1041107Third Party AdvisoryVDB Entry

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8244PatchVendor Advisory

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