Drupal core: Execute Arbitrary Code/Commands -- Existing Account

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1623
        Drupal core - Moderately critical - Third-party libraries -
                             SA-CORE-2019-007
                                9 May 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Drupal core
Publisher:         Drupal
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade

Original Bulletin: 
   https://www.drupal.org/sa-core-2019-007

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Drupal core - Moderately critical - Third-party libraries - SA-CORE-2019-007

Project:       Drupal core

Date:          2019-May-08

Security risk: Moderately critical 14/25
               AC:Complex/A:Admin/CI:All/II:All/E:Theoretical/TD:Uncommon

Vulnerability: Third-party librariesDescription:

This security release fixes third-party dependencies included in or required by
Drupal core. As described in TYPO3-PSA-2019-007: By-passing protection of Phar
Stream Wrapper Interceptor :

    In order to intercept file invocations like file_exists or stat on
    compromised Phar archives the base name has to be determined and checked
    before allowing to be handled by PHP Phar stream handling. [...]

    The current implementation is vulnerable to path traversal leading to
    scenarios where the Phar archive to be assessed is not the actual
    (compromised) file.

Solution:

Install the latest version:

  o If you are using Drupal 8.7, update to Drupal 8.7.1
  o If you are using Drupal 8.6 or earlier, update to Drupal 8.6.16 .
  o If you are using Drupal 7, update to Drupal 7.67 .

Versions of Drupal 8 prior to 8.6.x are end-of-life and do not receive security
coverage.

Also see the Drupal core project page.

Reported By:

  o Daniel Le Gall

Fixed By:

  o Jess of the Drupal Security Team
  o Michael Hess of the Drupal Security Team
  o Oliver Hader
  o David Snopek of the Drupal Security Team
  o Alex Pott of the Drupal Security Team
  o Daniel Le Gall
  o Tim Plunkett

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