Cybozu Office vulnerable to cross-site scripting


Cybozu Office is a groupware. Cybozu Office contains a cross-site scripting vulnerability in the function to customize the top page.

Motoki Nishio of VALTES CO.,LTD. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V2 Severity:
Base Metrics 2.6 (Low) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

Cybozu, Inc.
  • Cybozu Office 9.3.0 and earlier


An arbitrary script may be executed on the web browser of an user who is logged in.

[Update the software]
Update to the latest version according to the information provided by the developer.
Vendor Information

Cybozu, Inc.
CWE (What is CWE?)

  1. Cross-site Scripting(CWE-79) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2013-4703

  1. JVN : JVN#53014207
  2. National Vulnerability Database (NVD) : CVE-2013-4703
Revision History

  • [2013/09/10]
      Web page was published
      References : Content was added