CVE-2018-1000888— PEAR Archive_Tar 安全漏洞

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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.

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PEAR Archive_Tar 安全漏洞

PEAR Archive_Tar是一款使用在PHP中的用于创建、提取和添加tar文件的工具类。 PEAR Archive_Tar 1.4.3及之前版本中的Archive_Tar类存在安全漏洞。远程攻击者可借助特制的文件利用该漏洞执行代码，删除或可能修改文件。

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