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             AUSCERT External Security Bulletin Redistribution

     Drupal core - Critical - Third-party libraries - SA-CORE-2021-001
                              21 January 2021


        AusCERT Security Bulletin Summary

Product:           Drupal
Publisher:         Drupal
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Unauthorised Access -- Unknown/Unspecified
                   Reduced Security    -- Unknown/Unspecified
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-36193  

Original Bulletin: 

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Drupal core - Critical - Third-party libraries - SA-CORE-2021-001

Project: Drupal core
Date: 2021-January-20
Security risk: Critical 18∕25 AC:Complex/A:User/CI:All/II:All/E:Exploit/TD:Uncommon
Vulnerability: Third-party libraries
The Drupal project uses the pear Archive_Tar library, which has released a 
security update that impacts Drupal. For more information please see:

Exploits may be possible if Drupal is configured to allow .tar, .tar.gz, .bz2, or
.tlz file uploads and processes them.

Install the latest version:

If you are using Drupal 9.1, update to Drupal 9.1.3.
If you are using Drupal 9.0, update to Drupal 9.0.11.
If you are using Drupal 8.9, update to Drupal 8.9.13.
If you are using Drupal 7, update to Drupal 7.78.
Versions of Drupal 8 prior to 8.9.x are end-of-life and do not receive security coverage.

Disable uploads of .tar, .tar.gz, .bz2, or .tlz files to mitigate the vulnerability.

Reported By: 
Richard Sheppard
Stephen Cross
Jonathan Danaher
Kim Pepper
Fixed By: 
Lee Rowlands of the Drupal Security Team
Drew Webber of the Drupal Security Team
Greg Knaddison of the Drupal Security Team
Vijay Mani Provisional Member of the Drupal Security Team
Jess of the Drupal Security Team
Michael Hess of the Drupal Security Team

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