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Microsoft MsMpEng - Use-After-Free via Saved Callers
🗓️ 30 May 2017 00:00:00Reported by Google Security ResearchType 
exploitdb🔗 www.exploit-db.com👁 47 Views
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
7.4High risk
Vulners AI Score7.4