Published:2015/01/30  Last Updated:2015/01/30

JVN#13566542
Cybozu Remote Service Manager vulnerable to denial-of-service (DoS)

Overview

Remote Service Manager contains a denial-of-service (DoS) vulnerability.

Products Affected

  • Remote Service Manager 2.3.0 and earlier
  • Remote Service Manager 3.1.2 and earlier
According to the developer, if server.xml of Tomcat is configured according to the developer's instructions, Remote Service Manager 3.1.2 will not be affected.

Description

Remote Service Manager provided by Cybozu, Inc. is a software to access internal systems such as Cybozu products via "Cybozu Remote Service". Remote Service Manager contains a denial-of-service (DoS) vulnerability.

Note that this vulnerability was caused due to an incomplete fix of JVN#10319260.

Impact

An attacker may cause a denial-of-service (DoS) condition for a server that is running Remote Service Manager. As a result, "Cybozu Remote Service" may be disrupted.

Solution

For Remote Service Manager 3.1.2:
Change the settings
Change the settings file (server.xml), according to the instructions provided by the developer.

For Remote Service Manager 3.1.1 and earlier:
Update the software and change the settings
Apply the update and change the settings file (server.xml), according to the instructions provided by the developer.

Vendor Status

Vendor Status Last Update Vendor Notes
Cybozu, Inc. Vulnerable 2015/01/30 Cybozu, Inc. website

References

  1. Japan Vulnerability Notes JVN#10319260
    Cybozu Remote Service Manager vulnerable to denial-of-service (DoS)

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2015.01.30 (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) The access conditions are somewhat specialized.
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) There is no impact to the integrity of the system.
Availability Impact(A) None (N) Partial (P) Complete (C) There is a total shutdown of the affected resource.

Base Score:7.1

Credit

Cybozu, Inc. reported this vulnerability to JPCERT/CC to notify users of its solution through JVN.
JPCERT/CC and Cybozu, Inc. coordinated under the Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2014-7266
JVN iPedia JVNDB-2015-000001