Home/CVE/Microsoft Office Memory Corruption Vulnerability
CVE

CVE-2015-1641

Microsoft Office Memory Corruption Vulnerability

Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word 2013 RT SP1, Word for Mac 2011, Office Compatibility Pack SP3, Word Automation Services on SharePoint Server 2010 SP2 and 2013 SP1, and Office Web Apps Server 2010 SP2 and 2013 SP1 allow remote attackers to execute arbitrary code via a crafted RTF document, aka "Microsoft Office Memory Corruption Vulnerability.".

HIGH · CVSS 7.8 ⚠ CISA KEV EPSS 0.9367
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules16 YARA rules0
⬢

Required Remediation

Apply updates per vendor instructions.

◆

Threat Actors Linked

5
actorAPT41
actorCarbanak
actorNaikon
actorPatchwork
actorTropic Trooper
⬡

Weakness Classification

CWE-787Out-of-bounds Write
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

6
microsoft officeall versions
microsoft office compatibility packall versions
microsoft office web appsall versions
microsoft outlookall versions
microsoft sharepoint serverall versions
microsoft wordall versions
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Detection Rules (IDS/IPS)

7
et-openET HUNTING Microsoft Office Memory Corruption (CVE-2015-1641)bad-unknown
snort-communityFILE-OFFICE RFT document malformed headerattempted-user
snort-communityFILE-OFFICE RFT document malformed headerattempted-user
snort-communityFILE-OFFICE RTF document incorrect file magic attemptattempted-user
snort-communityFILE-OFFICE RTF document incorrect file magic attemptattempted-user
snort-communityFILE-OFFICE Microsoft Office RTF WRAssembly ASLR bypass download attemptattempted-user
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
◈

Sigma Hunt Rules

16
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
▣

Scoring & Timeline

7.8
HIGH · 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 NVD14 Apr 2015 · 08:59 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
cisaKEV-CVE-2015-1641
🔗

References & Sources

4
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/73995Broken LinkThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1032104Broken LinkThird Party AdvisoryVDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-033PatchVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1641US Government Resource
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