PHAR stream wrapper Arbitrary PHP code execution

CVE-2019-6339
9.8CRITICAL

Key Information

Vendor
Drupal
Status
Drupal Core
Vendor
CVE Published:
22 January 2019

Badges

👾 Exploit Exists🔴 Public PoC🟡 EPSS 89%

Summary

In Drupal Core versions 7.x prior to 7.62, 8.6.x prior to 8.6.6 and 8.5.x prior to 8.5.9; A remote code execution vulnerability exists in PHP's built-in phar stream wrapper when performing file operations on an untrusted phar:// URI. Some Drupal code (core, contrib, and custom) may be performing file operations on insufficiently validated user input, thereby being exposed to this vulnerability. This vulnerability is mitigated by the fact that such code paths typically require access to an administrative permission or an atypical configuration.

Affected Version(s)

Drupal core < 7.62

Drupal core < 8.6.6.

Drupal core < 8.5.9

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

drupal-cve-2019-6339
Created by Vulnmachines

EPSS Score

89% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit exists.

  • Vulnerability published.

  • Vulnerability Reserved.

Collectors

NVD DatabaseMitre Database1 Proof of Concept(s)
.