Published:2009/12/08  Last Updated:2009/12/24

Active! mail 2003 session ID disclosure vulnerability


Active! mail 2003 from TransWARE Co. contains a vulnerability in which session IDs may be disclosed.

Products Affected

  • Active! mail 2003 Build 2003.0139.0871 and earlier

  • The above products are affected by this vulnerability when the mobile function is enabled.


Active! mail 2003 from TransWARE Co. is a web-based email software. Active! mail 2003 contains a vulnerability in which session IDs may be disclosed.


A remote attacker could impersonate a user of Active! mail 2003. As a result, the user's email may be viewed or configurations may be modified.


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

Vendor Status

Vendor Link
TransWARE Co. AM03SA2009-003 (Japanese Only)


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2009.12.08

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-Medium - some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls)
  • Medium-High

Description of each analysis measures


Kenichi Maehashi of CIS RAT at Hosei University reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2009-4353
JVN iPedia JVNDB-2009-000076

Update History

Information under the sections "Vendor Status" and "Other Information" were modified.