CVE-2017-11870
Chakra Core vulnerable to privilege escalation when writing to JavaScript null scope objects
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- Microsoft Edge Chakra JIT - Incorrect Function Declaration Scope2017-11-27 · dos · windows · Verified
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | Microsoft.ChakraCore | < 1.7.4 | 1.7.4 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Chakracore | All versions |
| Microsoft | Edge | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- http://www.securityfocus.com/bid/101731
- http://www.securitytracker.com/id/1039780
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11870
- https://www.exploit-db.com/exploits/43182/
- https://github.com/advisories/GHSA-9f2p-wm46-6m5f
- 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://web.archive.org/web/20210516131515/http://www.securityfocus.com/bid/101731
- https://web.archive.org/web/20210517135249/http://www.securitytracker.com/id/1039780