cbcvebase.
CVE-2017-11811
published 2017-10-13

CVE-2017-11811: ChakraCore and Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the…

PriorityP269high7.5CVSS 3.0
AVNACHPRNUIRSUCHIHAH
EXPLOIT
EPSS
65.46%
99.2th percentile
ChakraCore and Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker 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-2017-11792, CVE-2017-11793, CVE-2017-11796, CVE-2017-11797, CVE-2017-11798, CVE-2017-11799, CVE-2017-11800, CVE-2017-11801, CVE-2017-11802, CVE-2017-11804, CVE-2017-11805, CVE-2017-11806, CVE-2017-11807, CVE-2017-11808, CVE-2017-11809, CVE-2017-11810, CVE-2017-11812, and CVE-2017-11821.

Affected

15 ranges
VendorProductVersion rangeFixed in
microsoftchakracore< 1.7.31.7.3
microsoftchakracore<= 1.7.2
microsoftinternet_explorer
microsoftinternet_explorer
microsoftinternet_explorer
msrcchakracore
msrcmicrosoft_edge_on_windows_10_for_32-bit_systems
msrcmicrosoft_edge_on_windows_10_for_x64-based_systems
msrcmicrosoft_edge_on_windows_10_version_1511_for_32-bit_systems
msrcmicrosoft_edge_on_windows_10_version_1511_for_x64-based_systems
msrcmicrosoft_edge_on_windows_10_version_1607_for_32-bit_systems
msrcmicrosoft_edge_on_windows_10_version_1607_for_x64-based_systems
msrcmicrosoft_edge_on_windows_10_version_1703_for_32-bit_systems
msrcmicrosoft_edge_on_windows_10_version_1703_for_x64-based_systems
msrcmicrosoft_edge_on_windows_server_2016

Detection & IOCsextracted from sources · hover to see the quote

  • The vulnerability is a type confusion in the Chakra JIT compiler triggered by switch statements, where the CSE (Common Subexpression Elimination) phase causes a jump table to be indexed by a Var (JavaScript value) instead of a validated int32 offset, enabling out-of-bounds memory access.
  • Exploitation vector is web-based: attacker hosts or compromises a website with specially crafted content targeting Microsoft Edge (HTML-based) scripting engine; monitor for Edge renderer crashes or JIT anomalies following visits to unknown/untrusted sites.
  • ·The exploit targets the Chakra JIT compiler's CSE optimization phase specifically with switch statements; the type confusion only manifests in JIT-compiled code paths, not interpreted execution.
  • ·Affected platforms are Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 running Microsoft Edge or ChakraCore; patched in ChakraCore v1.7.3 and KB updates 4041676, 4042895, 4041689, 4041691.

CVSS provenance

nvdv3.07.5HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.07.6HIGHAV:N/AC:H/Au:N/C:C/I:C/A:C
ghsa7.5HIGH
osv7.5HIGH
vendor_msrc4.2MEDIUM
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