CVE-2020-13671
November 20, 2020
Drupal core does not properly sanitize certain filenames on uploaded files, which can lead to files being interpreted as the incorrect extension and served as the wrong MIME type or executed as PHP for certain hosting configurations. This issue affects: Drupal Drupal Core 9.0 versions prior to 9.0.8, 8.9 versions prior to 8.9.9, 8.8 versions prior to 8.8.11, and 7 versions prior to 7.74.
Affected Packages
drupal/drupal (PHP):
Affected version(s) >=8.9.0 <8.9.9Fix Suggestion:
Update to version 8.9.9drupal/core (PHP):
Affected version(s) >=8.0.0 <8.8.11Fix Suggestion:
Update to version 8.8.11drupal/core (PHP):
Affected version(s) >=9.0.0 <9.0.8Fix Suggestion:
Update to version 9.0.8drupal/drupal (PHP):
Affected version(s) >=8.0.0 <8.8.11Fix Suggestion:
Update to version 8.8.11drupal/core (PHP):
Affected version(s) >=8.9.0 <8.9.9Fix Suggestion:
Update to version 8.9.9drupal/drupal (PHP):
Affected version(s) >=9.0.0 <9.0.8Fix Suggestion:
Update to version 9.0.8Related Resources (12)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
ATTACKED
CVSS v3
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Exploit Maturity
HIGH
CVSS v2
Base Score:
6.5
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Weakness Type (CWE)
Unrestricted Upload of File with Dangerous Type
EPSS
Base Score:
4.50
