// For flags

CVE-2019-6339

PHAR stream wrapper Arbitrary PHP code execution

Severity Score

9.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

En Drupal Core, en sus versiones 7.x anteriores a la 7.62, en las 8.6.x anteriores a la 8.6.6 y en las 8.5.x anteriores a la 8.5.9, existe una vulnerabilidad de ejecución remota de código en el wrapper de transmisión phar integrada del PHP cuando se ejecutan operaciones de archivo en un URI "phar://" no fiable. Algún código Drupal ("core", "contrib" y "custom") puede estar ejecutando operaciones de archivo en las entradas de usuarios no validadas de manera suficiente, lo que hace que estos se expongan a esta vulnerabilidad. Esta vulnerabilidad se mitiga por el hecho de que dichas rutas de código normalmente requieren acceso a un permiso del administrador o a una configuración atípica.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Drupal. Authentication is required to exploit this vulnerability.
The specific flaw exists within the handling of Phar archives. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the web server.

*Credits: Sam Thomas
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-01-15 CVE Reserved
  • 2019-01-22 CVE Published
  • 2024-08-17 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Drupal
Search vendor "Drupal"
 Drupal
Search vendor "Drupal" for product "Drupal"
 >= 7.0 < 7.62
Search vendor "Drupal" for product "Drupal" and version " >= 7.0 < 7.62"
-
Affected
Drupal
Search vendor "Drupal"
 Drupal
Search vendor "Drupal" for product "Drupal"
 >= 8.5.0 < 8.5.9
Search vendor "Drupal" for product "Drupal" and version " >= 8.5.0 < 8.5.9"
-
Affected
Drupal
Search vendor "Drupal"
 Drupal
Search vendor "Drupal" for product "Drupal"
 >= 8.6.0 < 8.6.6
Search vendor "Drupal" for product "Drupal" and version " >= 8.6.0 < 8.6.6"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 8.0
Search vendor "Debian" for product "Debian Linux" and version "8.0"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected