Intrusion PreventionMS.IE.Script.Engine.String.lastIndexOf.Use.After.Free
Description
This indicates an attack attempt to exploit a Memory Corruption vulnerability in Microsoft IE.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted webpage. An attacker can exploit this by tricking an unsuspecting user into visiting a malicious webpage and execute arbitrary code within the context of the application.
Affected Products
Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2
Internet Explorer 10 on Windows Server 2012
Internet Explorer 11 on Windows 10 for 32-bit Systems
Internet Explorer 11 on Windows 10 for x64-based Systems
Internet Explorer 11 on Windows 10 Version 1511 for 32-bit Systems
Internet Explorer 11 on Windows 10 Version 1511 for x64-based Systems
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1
Internet Explorer 11 on Windows 8.1 for 32-bit systems
Internet Explorer 11 on Windows 8.1 for x64-based systems
Internet Explorer 11 on Windows RT 8.1
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
Internet Explorer 11 on Windows Server 2012 R2
Internet Explorer 11 on Windows Server 2016
Impact
System Compromise: Remote attackers can gain control of vulnerable systems.
Recommended Actions
Apply the most recent upgrade or patch from the vendor.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0866
Telemetry
Coverage
| IPS (Regular DB) | |
| IPS (Extended DB) |
Version Updates
| Date | Version | Detail |
|---|---|---|
| 2024-04-10 | 27.764 | Sig Added |
| 2019-12-13 | 15.744 | Sig Added |
| 2019-12-05 | 15.739 | Name:MS. IE. CVE-2018-0866. Memory. Corruption:MS. IE. Script. Engine. String. lastIndexOf. Use. After. Free |
| 2019-06-06 | 14.627 | Severity:critical:high |
| ID | 45602 |
| Created | Feb 15, 2018 |
| Updated | Apr 10, 2024 |
| Risk |
|
| CVE ID | CVE-2018-0866 |
| Exploit Prediction Score | 93.33% |
| Default Action | drop |
| Active | |
| Affected OS | Windows |
| Affected App | IE |