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Synthesis of the vulnerability 
An attacker can traverse directories via Tar.php of Archive_Tar, in order to create a file outside the service root path.
Vulnerable systems: Debian, Drupal Core, Fedora, IBM API Connect, Ubuntu.
Severity of this threat: 2/4.
Creation date: 21/01/2021.
Références of this weakness: 6440659, CERTFR-2021-AVI-050, CVE-2020-36193, DLA-2530-1, DLA-2621-1, DRUPAL-SA-CORE-2021-001, FEDORA-2021-02996612f6, FEDORA-2021-dc7de65eed, USN-4723-1, VIGILANCE-VUL-34382.
Description of the vulnerability 
An attacker can traverse directories via Tar.php of Archive_Tar, in order to create a file outside the service root path. Full bulletin, software filtering, emails, fixes, ... (Request your free trial)
This security alert impacts software or systems such as Debian, Drupal Core, Fedora, IBM API Connect, Ubuntu.
Our Vigil@nce team determined that the severity of this security weakness is medium.
The trust level is of type confirmed by the editor, with an origin of document.
An attacker with a expert ability can exploit this security announce.
Solutions for this threat 
Drupal Core: version 9.1.3.
The version 9.1.3 is fixed:
https://www.drupal.org/download
Drupal Core: version 9.0.11.
The version 9.0.11 is fixed:
https://www.drupal.org/download
Drupal Core: version 8.9.13.
The version 8.9.13 is fixed:
https://www.drupal.org/download
Drupal Core: version 7.78.
The version 7.78 is fixed:
https://www.drupal.org/download
Debian 9: new drupal7 packages.
New packages are available:
Debian 9: drupal7 7.52-2+deb9u14
Debian 9: new php-pear packages.
New packages are available:
Debian 9: php-pear 1:1.10.1+submodules+notgz-9+deb9u3
Fedora 32: new php-pear packages.
New packages are available:
Fedora 32: php-pear 1.10.12-5.fc32
Fedora 33: new php-pear packages.
New packages are available:
Fedora 33: php-pear 1.10.12-5.fc33
IBM API Connect: solution for Drupal.
The solution is indicated in information sources.
Ubuntu: new php-pear packages.
New packages are available:
Ubuntu 20.10: php-pear 1:1.10.9+submodules+notgz-1ubuntu0.20.10.2
Ubuntu 20.04 LTS: php-pear 1:1.10.9+submodules+notgz-1ubuntu0.20.04.2
Ubuntu 18.04 LTS: php-pear 1:1.10.5+submodules+notgz-1ubuntu1.18.04.3
Ubuntu 16.04 LTS: php-pear 1:1.10.1+submodules+notgz-6ubuntu0.3
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)
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