Microsoft MsMpEng - Use-After-Free via Saved Callers
🗓️ 30 May 2017 00:00:00Reported by Google Security ResearchType 
exploitdb🔗 www.exploit-db.com👁 50 Views
| Reporter | Title | Published | Views | Family All 24 |
|---|---|---|---|---|
 | Microsoft MsMpEng - Use-After-Free via Saved Callers Exploit | 31 May 201700:00 | – | zdt |
 | CVE-2017-8538 | 26 May 201700:00 | – | attackerkb |
| CVE-2017-8541 | 26 May 201700:00 | – | attackerkb |
| CVE-2017-8540 | 26 May 201700:00 | – | attackerkb |
 | CVE-2017-8541 | 30 May 201700:00 | – | circl |
 | Microsoft Malware Protection Engine Remote Code Execution Vulnerability (CNVD-2017-09504) | 31 May 201700:00 | – | cnvd |
 | Microsoft Malware Protection Engine Remote Code Execution (CVE-2017-8541) | 29 May 201700:00 | – | checkpoint_advisories |
 | CVE-2017-8541 | 26 May 201720:00 | – | cve |
 | CVE-2017-8541 | 26 May 201720:00 | – | cvelist |
 | KLA11029 Multiple vulnerabilities in the Microsoft Malware Protection Engine | 9 May 201700:00 | – | kaspersky |
10
Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1259
In JsRuntimeState::setCaller, it saves the current caller in the JsRuntimeState object(rcx+158h in 64-bit). But the garbage collector doesn't mark this saved value. So it results in a UAF.
Unlike in our test environment(Linux), it doesn't make reliable crashes on Windows. So I used another bug(#1258) to confirm the bug. If the UAF bug doesn't exist, the "crash" function will not be called(See poc.js).
The password of the zip file is "calleruaf"
Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/42092.zipData
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30 May 2017 00:00Current
7.2High risk
Vulners AI Score7.2
CVSS 37.8
CVSS 29.3
EPSS0.50281