View online: https://www.drupal.org/sa-core-2021-001 Project: Drupal core [1] Date: 2021-January-20 Security risk: *Critical* 18∕25 AC:Complex/A:User/CI:All/II:All/E:Exploit/TD:Uncommon [2] Vulnerability: Third-party libraries Description:  The Drupal project uses the pear Archive_Tar library, which has released a security update that impacts Drupal. For more information please see: * CVE-2020-36193 [3] Exploits may be possible if Drupal is configured to allow .tar, .tar.gz, .bz2, or .tlz file uploads and processes them. Solution:  Install the latest version: * If you are using Drupal 9.1, update to Drupal 9.1.3 [4]. * If you are using Drupal 9.0, update to Drupal 9.0.11 [5]. * If you are using Drupal 8.9, update to Drupal 8.9.13 [6]. * If you are using Drupal 7, update to Drupal 7.78 [7]. 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 [8] * Stephen Cross [9] * Jonathan Danaher [10] * Kim Pepper [11] Fixed By:  * Lee Rowlands [12] of the Drupal Security Team * Drew Webber [13] of the Drupal Security Team * Greg Knaddison [14] of the Drupal Security Team * Vijay Mani [15] * Jess [16] of the Drupal Security Team * Michael Hess [17] of the Drupal Security Team [1] https://www.drupal.org/project/drupal [2] https://www.drupal.org/security-team/risk-levels [3] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36193 [4] https://www.drupal.org/project/drupal/releases/9.1.3 [5] https://www.drupal.org/project/drupal/releases/9.0.11 [6] https://www.drupal.org/project/drupal/releases/8.9.13 [7] https://www.drupal.org/project/drupal/releases/7.78 [8] https://www.drupal.org/user/55284 [9] https://www.drupal.org/user/2485138 [10] https://www.drupal.org/user/1771466 [11] https://www.drupal.org/user/370574 [12] https://www.drupal.org/user/395439 [13] https://www.drupal.org/user/255969 [14] https://www.drupal.org/user/36762 [15] https://www.drupal.org/user/93488 [16] https://www.drupal.org/user/65776 [17] https://www.drupal.org/user/102818