CVE-2017-8558
Description
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".
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Microsoft MsMpEng - mpengine x86 Emulator Heap Corruption in VFS API
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| windows | - | not-affected | |
| windows | 1511 | not-affected | |
| windows | 1607 | not-affected | |
| windows | 1703 | not-affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| microsoft | windows_defender | - | |
| microsoft | endpoint_protection | - | |
| microsoft | forefront_endpoint_protection | - | |
| microsoft | forefront_endpoint_protection | 2010 | |
| microsoft | security_essentials | - | |
| microsoft | windows_intune_endpoint_protection | - | |
References
- http://www.securityfocus.com/bid/99262
- http://www.securitytracker.com/id/1038783
- http://www.securitytracker.com/id/1038784
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558
- https://www.exploit-db.com/exploits/42264/
- http://www.securityfocus.com/bid/99262
- http://www.securitytracker.com/id/1038783
- http://www.securitytracker.com/id/1038784
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558
- https://www.exploit-db.com/exploits/42264/
CWEs
CWE-119
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.