JVN#04855224
baserCMS fails to restrict access permissions
Overview
baserCMS fails to restrict access permissions.
Products Affected
- baserCMS 3.0.7 and earlier
Description
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.
Impact
User information may be changed to arbitrary values by a logged in attacker that does not have requisite privileges.
Solution
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 |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
Analyzed on 2015.09.30 (CVSS Base Metrics)
| 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
Credit
Shoji Baba reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
Other Information
| JPCERT Alert |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2015-5640 |
| JVN iPedia |
JVNDB-2015-000138 |