CVE-2018-1000888
First published: Thu Dec 20 2018(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/pear/archive_tar | <1.4.4 | |
| debian/php-pear | <=1:1.10.6+submodules+notgz-1<=1:1.10.1+submodules+notgz-9 | 1:1.10.6+submodules+notgz-1.1 1:1.10.1+submodules+notgz-9+deb9u1 |
| Php Pear Archive Tar | <=1.4.3 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =18.10 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| ubuntu/php-pear | <1:1.10.5+ | 1:1.10.5+ |
| ubuntu/php-pear | <1:1.10.5+ | 1:1.10.5+ |
| ubuntu/php-pear | <1:1.10.6+ | 1:1.10.6+ |
| ubuntu/php-pear | <1:1.10.1+ | 1:1.10.1+ |
| debian/php-pear | 1:1.10.12+submodules+notgz+20210212-1 1:1.10.13+submodules+notgz+2022032202-2 |
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Reference Links
- https://pear.php.net/bugs/bug.php?id=23782
- https://security-tracker.debian.org/tracker/CVE-2018-1000888
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000888
- https://github.com/pear/Archive_Tar/commit/59ace120ac5ceb5f0d36e40e48e1884de1badf76
- https://www.exploit-db.com/exploits/46108/
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=919147
- https://blog.ripstech.com/2018/new-php-exploitation-technique/
- https://cdn2.hubspot.net/hubfs/3853213/us-18-Thomas-It%27s-A-PHP-Unserialization-Vulnerability-Jim-But-Not-As-We-....pdf
- https://lists.debian.org/debian-lts-announce/2019/02/msg00020.html
- https://pear.php.net/package/Archive_Tar/download/
- https://security.gentoo.org/glsa/202006-14
- https://usn.ubuntu.com/3857-1/
- https://www.debian.org/security/2019/dsa-4378
- https://launchpad.net/bugs/cve/CVE-2018-1000888
- http://blog.pear.php.net/2018/12/20/security-vulnerability-announcement-archive_tar/
- https://ubuntu.com/security/notices/USN-3857-1
- https://www.cve.org/CVERecord?id=CVE-2018-1000888
- https://nvd.nist.gov/vuln/detail/CVE-2018-1000888
- https://ubuntu.com/security/CVE-2018-1000888
- collector/friends-of-php
- collector/debian-bugs
- alias/CVE-2018-1000888
- collector/nvd-index
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/references
- agent/author
- agent/softwarecombine
- collector/security-tracker-debian
- source/Debian
- agent/software-canonical-lookup
- collector/nvd-cve
- source/NVD
- agent/description
- agent/severity
- agent/weakness
- agent/remedy
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/tags
- collector/usn-cve
- source/Ubuntu
- package-manager/composer
- package-manager/debian
- vendor/php
- canonical/php pear archive tar
- version/php pear archive tar/1.4.3
- vendor/canonical
- canonical/canonical ubuntu linux
- version/canonical ubuntu linux/16.04
- version/canonical ubuntu linux/18.04
- version/canonical ubuntu linux/18.10
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/8.0
- version/debian debian linux/9.0
- package-manager/ubuntu