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Security Advisories: GSA_kwCzR0hTQS05ZjJwLXdtNDYtNm01Zs4AAYHa

Chakra Core vulnerable to privilege escalation when writing to JavaScript null scope objects

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. This could be exploited using write-AV when writing to a slot of a JavaScript null scope object.

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-2017-11871, and CVE-2017-11873.

Permalink: https://github.com/advisories/GHSA-9f2p-wm46-6m5f
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS05ZjJwLXdtNDYtNm01Zs4AAYHa
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: almost 2 years ago
Updated: 7 months ago

CVSS Score: 7.5
CVSS vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Identifiers: GHSA-9f2p-wm46-6m5f, CVE-2017-11870
References:

• https://nvd.nist.gov/vuln/detail/CVE-2017-11870
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11870
• https://www.exploit-db.com/exploits/43182/
• https://github.com/chakra-core/ChakraCore/pull/4226
• https://github.com/chakra-core/ChakraCore/commit/b44ee8300ae03026d3c39cdbbfd32d410ac187f6
• https://web.archive.org/web/20210516131515/http://www.securityfocus.com/bid/101731
• https://web.archive.org/web/20210517135249/http://www.securitytracker.com/id/1039780
• https://github.com/advisories/GHSA-9f2p-wm46-6m5f

Repository: https://github.com/chakra-core/ChakraCore
Blast Radius: 1.0

Affected Packages