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CVE-2018-1000888

Status Candidate

Overview

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 Files

Gentoo Linux Security Advisory 202006-14
Posted Jun 15, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202006-14 - A buffer overflow in the PEAR module Archive_Tar might allow local or remote attacker(s) to execute arbitrary code. Versions below 1.4.5 are affected.

tags | advisory, remote, overflow, arbitrary, local
systems | linux, gentoo
advisories | CVE-2018-1000888
SHA-256 | 64f72cb7244e378c12f60f38642177b264964ab70212fd0dd3a599d6d481054d
Download | Favorite | View
Debian Security Advisory 4378-1
Posted Jan 30, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4378-1 - Fariskhi Vidyan discovered that the PEAR Archive_Tar package for handling tar files in PHP is prone to a PHP object injection vulnerability, potentially allowing a remote attacker to execute arbitrary code.

tags | advisory, remote, arbitrary, php
systems | linux, debian
advisories | CVE-2018-1000888
SHA-256 | 7e4ef23ca8470300ddac7bad2d8bad6f040e2ce16dd0123ba1e84084b83ec707
Download | Favorite | View
Ubuntu Security Notice USN-3857-1
Posted Jan 15, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3857-1 - Fariskhi Vidyan discovered that PEAR Archive_Tar incorrectly handled certain archive paths. A remote attacker could possibly use this issue to execute arbitrary code.

tags | advisory, remote, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-1000888
SHA-256 | 1d5566ce471b7460908ec1e4e46ec21960e749406646a4ae8f31b0ce933d9dd8
Download | Favorite | View
PEAR Archive_Tar PHP Object Injection
Posted Jan 10, 2019
Authored by farisv

PEAR Archive_Tar versions prior to 1.4.4 suffers from a php object injection vulnerability.

tags | exploit, php
advisories | CVE-2018-1000888
SHA-256 | cad5188ebafd78a5e0e10621a684eddce0406c02de57368d07686cc16c02a522
Download | Favorite | View
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