Buffer overflow in Microsoft Endpoint Protection
CVE-2017-8558
The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on 32-bit versions of Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703 does not properly scan a specially crafted file leading to memory corruption. aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability".
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.436 (98.7th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.436 · newest: 0.436 · change: 0.000
Affected products
- Microsoft Endpoint Protection
- Microsoft Forefront Endpoint Protection — versions 2010
- Microsoft Security Essentials
- Microsoft Windows 10 — versions 1511, 1607, 1703
- Microsoft Windows 7
- Microsoft Windows 8.1
- Microsoft Windows Defender
- Microsoft Windows Intune Endpoint Protection
- Microsoft Windows Server 2008
- Microsoft Corporation Malware Protection Engine — versions 32-bit versions only of Microsoft Forefront and Microsoft Defender on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016, Microsoft Exchange Server 2013 and 2016.
Weakness classification (CWE)
References
- www.securityfocus.com/bid/99262 (VDB Entry, Third Party Advisory, vdb-entry)
- www.exploit-db.com/exploits/42264/ (VDB Entry, Third Party Advisory, exploit)
- www.securitytracker.com/id/1038783 (VDB Entry, Third Party Advisory, vdb-entry)
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558 (Vendor Advisory)
- www.securitytracker.com/id/1038784 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-8558?
- CVE-2017-8558 is a high-severity vulnerability in Microsoft Endpoint Protection, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-06-29.
- How severe is CVE-2017-8558?
- High severity. CVSS v3 base score is 7.8 out of 10.