GitHub Advisoryadvisory · Packagist
GHSA-3q76-jq6m-573p Archive_Tar contains Potential RCE if filename starts with phar://
HIGH
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
- https://nvd.nist.gov/vuln/detail/CVE-2018-1000888 advisory
- https://github.com/pear/Archive_Tar/commit/59ace120ac5ceb5f0d36e40e48e1884de1badf76 web
- https://github.com/FriendsOfPHP/security-advisories/blob/master/pear/archive_tar/CVE-2018-1000888.yaml web
- https://github.com/pear/Archive_Tar package
- https://lists.debian.org/debian-lts-announce/2019/02/msg00020.html web
- https://pear.php.net/bugs/bug.php?id=23782 web
- https://security.gentoo.org/glsa/202006-14 web
- https://usn.ubuntu.com/3857-1 web
- 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 web
- https://web.archive.org/web/20220524160841/https://blog.sonarsource.com/new-php-exploitation-technique?redirect=rips web
- https://www.debian.org/security/2019/dsa-4378 web
- https://www.exploit-db.com/exploits/46108 web