Published:2014/04/18  Last Updated:2014/04/18

Cybozu Remote Service Manager vulnerable to session fixation


Remote Service Manager contains a session fixation vulnerability.

Products Affected

  • Remote Service Manager 2.3.0 and earlier
  • Remote Service Manager 3.1.0 and earlier


Remote Service Manager provided by Cybozu,Inc. is a software to access on-premise systems such as Cybozu products via "Cybozu Remote Service". Remote Service Manager contains a session fixation vulnerability.


A remote, unauthenticated attacker may impersonate a registered user. As a result, information may be disclosed or altered.


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

Vendor Status

Vendor Status Last Update Vendor Notes
Cybozu, Inc. Vulnerable 2014/04/18 Cybozu, Inc. website


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2014.04.18 (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 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:5.8


Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2014-1984
JVN iPedia JVNDB-2014-000040