CVE-2017-16935 Information

Description

Ametys before 4.0.3 requires authentication only for URIs containing a /cms/ substring which allows remote attackers to bypass intended access restrictions via a direct request to /plugins/core-ui/servercomm/messages.xml as demonstrated by changing the admin password by obtaining account details via a users/search.json request and then modifying the account via an editUser request.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://blogs.securiteam.com/index.php/archives/3517 https://issues.ametys.org/browse/RUNTIME-2582

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8