GitHub Advisoryadvisory · Packagist

GHSA-3q76-jq6m-573p Archive_Tar contains Potential RCE if filename starts with phar://

HIGH Published 2023-07-07 Modified 2023-07-07 Official page ↗
Aliases
CVE-2018-1000888
Ecosystem
Packagist
Packages
pear/archive_tar
Severity
High
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Reviewed
2023-07-07

Affected packages

• Packagist pear/archive_tar: < 1.4.4 → fixed in 1.4.4

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.

Related

Alias · CVE (1)

  • CVE-2018-1000888 PEAR Archive_Tar version 1.4.3 and earlier contains a CWE-502, CWE-915 vulnerability in the Archive_Tar class. vulnerability

References