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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | Microsoft.ChakraCore | < 1.7.4 | 1.7.4 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2017-11870
- https://github.com/chakra-core/ChakraCore/pull/4226
- https://github.com/chakra-core/ChakraCore/commit/b44ee8300ae03026d3c39cdbbfd32d410ac187f6
- https://github.com/chakra-core/ChakraCore
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11870
- 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://www.exploit-db.com/exploits/43182
- CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-119- Platform
- .NET (NuGet)
- Package
Microsoft.ChakraCore- Disclosed
- 17.05.2022
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-9f2p-wm46-6m5f - CC BY 4.0
Vulnerability history: Microsoft.ChakraCore
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 247
- First → latest
- 04.2019 05.2022
- Without a fix
- 5
- Exploited in attacks
- 3
Severity breakdown
- Critical 5
- High 234
- Medium 8
Disclosures per year
- 2019: 8
- 2020: 0
- 2021: 58
- 2022: 181
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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Chakra Core vulnerable to privilege escalation when writing to JavaScript null scope objects this entry
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