Vulnerability identifier: #VU23682

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Drupal
Web applications / CMS

Vendor: Drupal

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to usage of vulnerable Archive_Tar library. If Drupal is configured to allow .tar, .tar.gz, .bz2 or .tlz file uploads, a remote attacker can upload and execute arbitrary PHP code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Drupal: 8.8.0 - 8.8.0 rc1, 8.7.0 - 8.7.10, 7.0 - 7.68

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External links
http://www.drupal.org/sa-core-2019-012

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.