Published:2015/09/30  Last Updated:2015/09/30

baserCMS fails to restrict access permissions


baserCMS fails to restrict access permissions.

Products Affected

  • baserCMS 3.0.7 and earlier


baserCMS is an open-source Contents Management System (CMS). baserCMS contains a vulnerability where user settings may be changed when processing specially crafted request sent by an attacker logged into the system.


User information may be changed to arbitrary values by a logged in attacker that does not have requisite privileges.


Update the Software
Update to the latest version according to the information provided by the developer.

Apply the Patch
Patches for versions 3.0.0 through 3.0.7 have been released. For more information, refer to "How to Apply the Patches".

Vendor Status

Vendor Status Last Update Vendor Notes
baserCMS Users Community Vulnerable 2015/09/30 baserCMS Users Community website


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2015.09.30 (CVSS Base Metrics)

What is CVSS?

Measures Severity Description
Access Vector(AV) Local (L) Adjacent Network (A) Network (N) A vulnerability exploitable with network access means the vulnerable software is bound to the network stack and the attacker does not require local network access or local access. Such a vulnerability is often termed "remotely exploitable".
Access Complexity(AC) High (H) Medium (M) Low (L) Specialized access conditions or extenuating circumstances do not exist.
Authentication(Au) Multiple (M) Single (S) None (N) The vulnerability requires an attacker to be logged into the system (such as at a command line or via a desktop session or web interface).
Confidentiality Impact(C) None (N) Partial (P) Complete (C) There is considerable informational disclosure. Access to some system files is possible, but the attacker does not have control over what is obtained, or the scope of the loss is constrained.
Integrity Impact(I) None (N) Partial (P) Complete (C) Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.
Availability Impact(A) None (N) Partial (P) Complete (C) There is no impact to the availability of the system.

Base Score:5.5


Shoji Baba reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2015-5640
JVN iPedia JVNDB-2015-000138