CVE-2017-11937
Exploitation likely. EPSS gives it a 28% chance of exploitation in the next 30 days. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Windows 7 SP1, Windows 8.1, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, 1709 and Windows Server 2016, Windows Server, version 1709, Microsoft Exchange Server 2013 and 2016, does not properly scan a specially crafted file leading to remote code execution. aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability".
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
28% chance of exploitation activity in the next 30 days, which ranks it in the 98th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
7 events over 3122 days, from the signal feeds we watch.
- OpenVAS check added
- Patch availablerecord updated
- EPSS band changehigh → moderate
- Publishedweakness classified, att&ck mapped
Affected products
- malware protection engineSecurity Products / endpoint-av-edr
- Microsoft Exchange ServerOperating Systems
- Microsoft Endpoint ProtectionSecurity Products / endpoint-av-edr
- Microsoft Forefront Endpoint ProtectionSecurity Products / endpoint-av-edr
- Microsoft Security EssentialsSecurity Products / endpoint-av-edr
- Windows DefenderSecurity Products / vuln-mgmt-scanner
- Windows Intune Endpoint ProtectionSecurity Products / endpoint-av-edr
Technical detail
CVSS 3.0 vector
Open in the CVSS calculatorCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Scored 7.8 by NVD.
How it is reached
- Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction RequiredA user must click a link, open a file, or perform some action
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
- Initial AccessT1190Exploit Public-Facing Applicationhigh confidence
- Privilege EscalationT1068Exploitation for Privilege Escalationhigh confidence
Sources
References in the record
- securitytracker.com/id/1039972
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11937
- securityfocus.com/bid/102070
And 3 more references. See all after sign-in
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