cbcvebase.
CVE-2017-11914
published 2017-12-12

CVE-2017-11914: ChakraCore and Microsoft Edge in Windows 10 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to gain the same user rights as the current…

PriorityP268high7.5CVSS 3.0
AVNACHPRNUIRSUCHIHAH
EXPLOIT
EPSS
62.65%
99.1th percentile
ChakraCore and Microsoft Edge in Windows 10 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to gain the same user rights as 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-2017-11909, CVE-2017-11910, CVE-2017-11911, CVE-2017-11912, CVE-2017-11913, CVE-2017-11916, CVE-2017-11918, and CVE-2017-11930.

Affected

14 ranges
VendorProductVersion rangeFixed in
microsoftchakracore< 1.7.51.7.5
microsoftinternet_explorer
microsoftinternet_explorer
microsoftinternet_explorer
msrcchakracore
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_10_version_1709_for_32-bit_systems
msrcmicrosoft_edge_on_windows_10_version_1709_for_x64-based_systems
msrcmicrosoft_edge_on_windows_server_2016

Detection & IOCsextracted from sources · hover to see the quote

commandg.call(0x1234, 0x5678);
  • Type confusion triggered by defining a getter on a GeneratorFunction's 'length' property, causing 'scriptFunction' to be exposed as 'this' to user JavaScript code in Microsoft Edge Chakra
  • Vulnerability class is JavascriptGeneratorFunction::GetPropertyBuiltIns type confusion — monitor for exploitation of generator function 'length' property access patterns in Edge/ChakraCore scripting engine
  • Exploit is publicly available on Exploit-DB (EDB-43713); patch via KB4053580, KB4054517, KB4053578, KB4053579 or ChakraCore v1.7.5
  • ·Exploit status per Microsoft MSRC: publicly disclosed=No, exploited in the wild=No at time of advisory; exploitation assessed as 'More Likely' for latest software release
  • ·Vulnerability affects Microsoft Edge (HTML-based) scripting engine handling objects in memory; attack vector is web-based (user must visit attacker-controlled or compromised website)

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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