JVN#33977065 WebCalenderC3 cross-site scripting vulnerability

Overview

WebCalenderC3 from C3 Corp. contains a cross-site scripting vulnerability.

Products Affected

WebCalenderC3 V0.32 and earlier

Description

WebCalenderC3 from C3 Corp. is a calender software. WebCalenderC3 contains a cross-site scripting vulnerability.

According to the developer, they were not able to reproduce the vulnerability. However, to mitigate against potential security risks, the developer has released a security enhanced version.

Impact

An arbitrary script may be executed on the user's web browser.

Solution

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

Vendor Status

Vendor	Link
C3 Corp.	WebCalenderC3 (Japanese Only)

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2010.01.12

Measures	Conditions	Severity
Access Required	Routed - can be attacked over the Internet using packets	High
Authentication	None - anonymous or no authentication (IP addresses do not count)	High
User Interaction Required	Simple - the user must be convinced to take a standard action that does not feel harmful to most users, such as click on a link or view a file	Medium
Exploit Complexity	Low - little to no expertise and/or luck required to exploit (cross-site scripting)	High

Description of each analysis measures

Credit

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

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE	CVE-2010-0349
JVN iPedia	JVNDB-2010-000002