CVE Vulnerability

CVE-2020-13443

ExpressionEngine before 5.3.2 allows remote attackers to upload and execute arbitrary code in a .php%20 file via Compose Msg, Add attachment, and Save As Draft actions. A user with low privileges (member) is able to upload this. It is possible to bypass the MIME type check and file-extension check while uploading new files. Short aliases are not used for an attachment; instead, direct access is allowed to the uploaded files. It is possible to upload PHP only if one has member access, or registration/forum is enabled and one can create a member with the default group id of 5. To exploit this, one must to be able to send and compose messages (at least).

6.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://expressionengine.com/blog Vendor Advisory
https://gist.github.com/mariuszpoplwski/51604d8a6d7d78fffdf590c25e844e09 Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:expressionengine:expressionengine:*:*:*:*:*:*:*:*
Information

Published : 2020-06-24 03:15

Updated : 2020-07-02 06:37

NVD link : CVE-2020-13443

Mitre link : CVE-2020-13443

Products Affected
No products.
CWE
CWE-434