Vulnerability identifier: #VU17064

Vulnerability risk: Medium

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/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-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Drupal
Web applications / CMS

Vendor: Drupal

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to usage of a vulnerable version of a third-party PEAR Archive_Tar library. A remote attacker can send a specially crafted request and execute arbitrary PHP code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Drupal: 8.6.0 - 8.6.5, 8.5.0 - 8.5.8, 7.0 - 7.x

---

External links
http://www.drupal.org/sa-core-2019-001

---

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.