CVE-2018-20250 PoC — WinRar 路径遍历漏洞

Source

Associated Vulnerability

Title:WinRar 路径遍历漏洞 (CVE-2018-20250)
Description:In WinRAR versions prior to and including 5.61, There is path traversal vulnerability when crafting the filename field of the ACE format (in UNACEV2.dll). When the filename field is manipulated with specific patterns, the destination (extraction) folder is ignored, thus treating the filename as an absolute path.

Description

Python tool exploiting CVE-2018-20250 found by CheckPoint folks

Readme

# ezwinrar
Python tool exploiting CVE-2018-20250 found by CheckPoint folks : https://research.checkpoint.com/extracting-code-execution-from-winrar/
> By crafting the filename field of the ACE format, the destination folder (extraction folder) is ignored, and the relative path in the filename field becomes an absolute Path. This logical bug, allows the extraction of a file to an arbitrary location which is effectively code execution.

### Usage:

`python3 ezwinrar.py /path/to/winace.exe` (default is `C:\Program File (x86)\WinAce\winace.exe`)

(1) User's startup folder:  
Since it is not possible to guess the name of the victime in advance (else use 3), the path will be like `..\Appdata\Roaming\Microsoft\Windows\Start Menu\Programs\Startup`   

(2) System startup folder:  
File will be in `C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp`. System privileges are required.

(3) Custom local location  

(4) SMB location [not implemented yet]

File Snapshot


 [4.0K]  /data/pocs/c3dd5e9a4aab2b551870d611f284531c9bbbbedf
├── [5.9K]  ezwinrar.py
├── [ 34K]  LICENSE
├── [ 964]  README.md
└── [3.9M]  wace269i.exe

0 directories, 4 files

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