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CVE-2018-1000888GHSA-3Q76-JQ6M-573P

PEAR Archive_Tar version 1.4.3 and earlier contains a CWE-502, CWE-915 vulnerability in the Archive_Tar class.

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 1.4.4
1 on Exploit-DB

Summary

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.

Timeline

  1. CVE published
  2. Public exploit on Exploit-DB

    EDB-46108

  3. Record last updated
  4. EPSS reached 10%

    FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

  • n/a n/a

    Version range not reported

  • pear/archive_tarPackagist

    fixed in 1.4.4

References 10

lists.debian.org

usn.ubuntu.com

debian.org

Exploit-DB

pear.php.net

cdn2.hubspot.net

blog.ripstech.com

security.gentoo.org