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CVE

CVE-2023-35636

Microsoft Outlook Information Disclosure Vulnerability

Microsoft Outlook Information Disclosure Vulnerability.

MEDIUM · CVSS 6.5 EPSS 0.10525
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 7% of all CVEs by exploitation likelihood
Sigma rules8 YARA rules0
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Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
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Affected Products & Versions

3
microsoft 365 appsall versions
microsoft officeall versions
microsoft office long term servicing channelall versions
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Detection Rules (IDS/IPS)

2
et-openET HUNTING External SMB ANDX Request for Outlook Calendar Invite File (.ics) - Possible NTLM Hash Leak Attemptcredential-theft
et-openET EXPLOIT Possible Malicious x-sharing-config-url SMTP header observed (CVE-2023-35636)credential-theft
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
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Sigma Hunt Rules

8
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
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Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · 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 NVD12 Dec 2023 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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Vendor Advisories

1
msrcCVE-2023-35636Information Disclosure
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