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.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-1674-1 php5 security update
Debian DLA Debian DLA DLA-1685-1 drupal7 security update
Debian DSA Debian DSA DSA-4378-1 php-pear security update
Github GHSA Github GHSA GHSA-3q76-jq6m-573p Archive_Tar contains Potential RCE if filename starts with phar://
Ubuntu USN Ubuntu USN USN-3857-1 PEAR vulnerability
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.25934}

epss

{'score': 0.25032}


Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.28711}

epss

{'score': 0.25934}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T12:47:57.148Z

Reserved: 2018-12-20T00:00:00

Link: CVE-2018-1000888

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-12-28T16:29:01.957

Modified: 2024-11-21T03:40:35.680

Link: CVE-2018-1000888

cve-icon Redhat

Severity : Moderate

Publid Date: 2018-12-28T00:00:00Z

Links: CVE-2018-1000888 - Bugzilla

cve-icon OpenCVE Enrichment

No data.