Main Vulnerability Database Vulnerabilities #VU23682

Arbitrary file upload in Drupal - #VU23682

Published: December 19, 2019

Vulnerability identifier: #VU23682

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: N/A

CWE-ID: CWE-434

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

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.

Affected software

Drupal
Backdrop CMS

Remediation

Install updates from vendor's website.

Drupal - addressed in versions 7.69, 8.7.11, 8.8.1
Backdrop CMS - addressed in versions 1.13.5, 1.14.2

External References

https://www.drupal.org/sa-core-2019-012

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