JVN#74280258: MilkyStep fails to restrict access permissions

Overview

MilkyStep provided by Igreks Inc. fails to restrict access permissions.

Note that this vulnerability is different from JVN#16409640.

MilkyStep provided by Igreks Inc. is a CGI for e-mail newsletter distribution management. MilkyStep fails to restrict access permissions (CWE-264).

A remote attacker may alter product settings.

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

Vendor	Status	Last Update	Vendor Notes
Igreks Inc.	Vulnerable	2015/06/09	Igreks Inc. website

Analyzed on 2015.06.09 (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)	Authentication is not required to exploit the vulnerability.
Confidentiality Impact(C)	None (N)	Partial (P)	Complete (C)	There is no impact to the confidentiality of the system.
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 reduced performance or interruptions in resource availability.

Base Score:6.4

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