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CVE-2018-1000888

CVE-2018-1000888

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 8.8 · High · EPSS 19.1% · Public exploit · Fix available

Published
Updated

Stack: system · php

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • php-pear Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:1.10.6+submodules+notgz-1.1

    Update to 1:1.10.6+submodules+notgz-1.1

  • php-pear Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:1.10.6+submodules+notgz-1.1

    Update to 1:1.10.6+submodules+notgz-1.1

  • php-pear Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:1.10.6+submodules+notgz-1.1

    Update to 1:1.10.6+submodules+notgz-1.1

  • pear/archive_tar Packagist

    Versions
    • 1.3.11
    • 1.3.12
    • 1.3.13
    • 1.3.14
    • 1.3.15
    • 1.3.16
    • 1.4.0
    • 1.4.1
    • 1.4.2
    • 1.4.3
    Affected ranges
    • ECOSYSTEM: < 1.4.4

    Update to 1.4.4

  • php-pear Ubuntu:16.04:LTS

    Versions
    • 1:1.10.1+submodules+notgz-4
    • 1:1.10.1+submodules+notgz-6
    Affected ranges
    • ECOSYSTEM: < 1:1.10.1+submodules+notgz-6ubuntu0.1

    Update to 1:1.10.1+submodules+notgz-6ubuntu0.1

  • php-pear Ubuntu:18.04:LTS

    Versions
    • 1:1.10.5+submodules+notgz-1
    • 1:1.10.5+submodules+notgz-1ubuntu1
    Affected ranges
    • ECOSYSTEM: < 1:1.10.5+submodules+notgz-1ubuntu1.18.04.1

    Update to 1:1.10.5+submodules+notgz-1ubuntu1.18.04.1

Original sources

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