7.5
CVSSv3

CVE-2017-11909

Published: 12/12/2017 Updated: 25/04/2019
CVSS v2 Base Score: 7.6 | Impact Score: 10 | Exploitability Score: 4.9
CVSS v3 Base Score: 7.5 | Impact Score: 5.9 | Exploitability Score: 1.6
VMScore: 765
Vector: AV:N/AC:H/Au:N/C:C/I:C/A:C

Vulnerability Summary

ChakraCore and Windows 10 1511, 1607, 1703, 1709, and Windows Server 2016 allows an malicious user to execute arbitrary code in the context of the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11886, CVE-2017-11889, CVE-2017-11890, CVE-2017-11893, CVE-2017-11894, CVE-2017-11895, CVE-2017-11901, CVE-2017-11903, CVE-2017-11905, CVE-2017-11905, CVE-2017-11907, CVE-2017-11908, CVE-2017-11910, CVE-2017-11911, CVE-2017-11912, CVE-2017-11913, CVE-2017-11914, CVE-2017-11916, CVE-2017-11918, and CVE-2017-11930.

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microsoft edge -

microsoft chakracore

Exploits

/* The optimizations for memory operations may leave empty loops as follows: for (let i = 0; i < arrlength; i++) { arr[i] = 0; } Becomes: Memset(arr, 0, arrlength); for (let i = 0; i < arrlength; i++) { // empty! } These empty loops will be removed by "BackwardPass::RemoveEmptyLoopAfterMemOp" But this method just removes them ...
Microsoft Edge Chakra JIT has an issue where BackwardPass::RemoveEmptyLoopAfterMemOp does not insert branches ...