JVN#86680970: Gazou BBS plus vulnerability in file upload processing

Overview

Gazou BBS plus provided by LEMON-S PHP contains a vulnerability in the processing of file uploads.

Gazou BBS plus provided by LEMON-S PHP contains a vulnerability in the processing of file uploads.

An image file may be specially crafted to upload arbitrary HTML files.

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Vendor	Status	Last Update	Vendor Notes
LEMON-S PHP	Vulnerable	2015/07/28

Analyzed on 2015.07.28 (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 no impact to the availability of the system.

Base Score:5.0

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