Archive_Tar contains Potential RCE if filename starts with phar://
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.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | pear/archive_tar | < 1.4.4 | 1.4.4 |
Referencias
- https://nvd.nist.gov/vuln/detail/CVE-2018-1000888
- https://github.com/pear/Archive_Tar/commit/59ace120ac5ceb5f0d36e40e48e1884de1badf76
- https://github.com/FriendsOfPHP/security-advisories/blob/master/pear/archive_tar/CVE-2018-1000888.yaml
- https://github.com/pear/Archive_Tar
- https://lists.debian.org/debian-lts-announce/2019/02/msg00020.html
- https://pear.php.net/bugs/bug.php?id=23782
- https://security.gentoo.org/glsa/202006-14
- https://usn.ubuntu.com/3857-1
- https://web.archive.org/web/20210328115328/https://cdn2.hubspot.net/hubfs/3853213/us-18-Thomas-It's-A-PHP-Unserialization-Vulnerability-Jim-But-Not-As-We-....pdf
- https://web.archive.org/web/20220524160841/https://blog.sonarsource.com/new-php-exploitation-technique?redirect=rips
- https://www.debian.org/security/2019/dsa-4378
- https://www.exploit-db.com/exploits/46108
- Vector CVSS
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Debilidad (CWE)
-- Plataforma
- Composer
- Paquete
pear/archive_tar- Publicada
- 07.07.2023
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-3q76-jq6m-573p - CC BY 4.0
Historial de vulnerabilidades: pear/archive_tar
Todas las vulnerabilidades publicadas de este paquete (Paquete de Composer), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 5
- Primera → última
- 11.2020 07.2023
- Sin corrección
- 0
- Explotada en ataques
- 1
Distribución por gravedad
- Crítica 1
- Alta 4
Divulgaciones por año
- 2020: 1
- 2021: 2
- 2022: 1
- 2023: 1
- 2024: 0
- 2025: 0
- 2026: 0
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Archive_Tar contains Potential RCE if filename starts with phar:// esta entrada
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