7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
7.6 High
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:H/Au:N/C:C/I:C/A:C
0.945 High
EPSS
Percentile
99.2%
ChakraCore and Microsoft Edge in Windows 10 1703, 1709, and Windows Server, version 1709 allows an attacker to gain the same user rights as the current user, due to how the scripting engine handles objects in memory, aka βScripting Engine Memory Corruption Vulnerabilityβ. When trying to get inlineCache
s for a ScriptFunctionWithInlineCache
, if the function got redefered and was not reparsed, the function body (and inlineCache
on function body) wonβt be there, potentially leading to a privilege escalation.
This CVE ID is unique from CVE-2017-11836, CVE-2017-11837, CVE-2017-11838, CVE-2017-11839, CVE-2017-11840, CVE-2017-11841, CVE-2017-11843, CVE-2017-11846, CVE-2017-11858, CVE-2017-11859, CVE-2017-11861, CVE-2017-11862, CVE-2017-11866, CVE-2017-11869, CVE-2017-11870, and CVE-2017-11873.
github.com/chakra-core/ChakraCore
github.com/chakra-core/ChakraCore/commit/9d211a417757ba1ddcd0f2e72d9553535256107e
github.com/chakra-core/ChakraCore/pull/4226
nvd.nist.gov/vuln/detail/CVE-2017-11871
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11871
web.archive.org/web/20210124114740/www.securityfocus.com/bid/101730
web.archive.org/web/20210517135249/www.securitytracker.com/id/1039780
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
7.6 High
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:H/Au:N/C:C/I:C/A:C
0.945 High
EPSS
Percentile
99.2%