Exploitation Summary
EIP tracks 1 public exploit for CVE-2018-1000888. PoCs published by Fariskhi Vidyan.
AI-analyzed exploit summary This exploit demonstrates PHP object injection via unserialization in PEAR Archive_Tar < 1.4.4 by crafting a malicious tar file with a phar:// wrapper, leading to arbitrary file deletion via the Archive_Tar destructor.
Description
PEAR Archive_Tar version 1.4.3 and earlier contains a CWE-502, CWE-915 vulnerability in the Archive_Tar class. There are several file operations with `$v_header['filename']` as parameter (such as file_exists, is_file, is_dir, etc). When extract is called without a specific prefix path, we can trigger unserialization by crafting a tar file with `phar://[path_to_malicious_phar_file]` as path. Object injection can be used to trigger destruct in the loaded PHP classes, e.g. the Archive_Tar class itself. With Archive_Tar object injection, arbitrary file deletion can occur because `@unlink($this->_temp_tarname)` is called. If another class with useful gadget is loaded, it may possible to cause remote code execution that can result in files being deleted or possibly modified. This vulnerability appears to have been fixed in 1.4.4.
Exploits (1)
This exploit demonstrates PHP object injection via unserialization in PEAR Archive_Tar < 1.4.4 by crafting a malicious tar file with a phar:// wrapper, leading to arbitrary file deletion via the Archive_Tar destructor.
References (9)
Scores
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H