Microsoft MsMpEng – Use-After-Free via Saved Callers

• Exploit Database
• 21 阅读

• 作者： Google Security Research
  日期： 2017-05-30
• 类别：

  • dos
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/42092/

• 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.zip