CVE-2017-8641

Description

Microsoft browsers in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allow an attacker to execute arbitrary code in the context of the current user due to the way that Microsoft browser JavaScript engines render when handling objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8634, CVE-2017-8635, CVE-2017-8636, CVE-2017-8638, CVE-2017-8639, CVE-2017-8640, CVE-2017-8645, CVE-2017-8646, CVE-2017-8647, CVE-2017-8655, CVE-2017-8656, CVE-2017-8657, CVE-2017-8670, CVE-2017-8671, CVE-2017-8672, and CVE-2017-8674.

Affected products

Vendor	Product	Affected	Fixed
Microsoft	Microsoft Scripting Engine	Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016.	—

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

Microsoft Edge Chakra - 'chakra!Js::GlobalObject' Integer overflow EDB-42465 · dos · Aug 17, 2017

GitHub 1 repository

homjxi0e/CVE-2017-8641_chakra_Js_GlobalObject ★ 1 · Aug 21, 2017

There is a classic heap overflow when eval a string which large enough in Chakra! This issue can be reproduced steadly in uptodate Edge in Win10 WIP. An exception will occur immediatly when opening P…

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References

100057 vdb-entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8641
1039095 vdb-entry
42465 exploit