Published:2011/09/09  Last Updated:2011/09/09

Megalith vulnerable to authentication bypass


Megalith contains an authentication bypass vulnerability.

Products Affected

  • Megalith 12th edition through 27th edition


Megalith is a bulletin board software. Megalith contains an authentication bypass vulnerability.


A remote attacker may obtain administrative privileges.


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


JPCERT/CC Addendum

This JVN publication was delayed to 2011/09/09 after the developer fix was developed. From the fiscal year 2011, JPCERT/CC is using a new vendor coordination procedure. This new procedure came from the recommendation of the fiscal year 2010 "Study Group on Information System Vulnerability Handling" aimed at more timely JVN publications.

Vulnerability Analysis by JPCERT/CC

Analyzed on 2011.09.09

Measures Conditions Severity
Access Required can be attacked over the Internet using packets
  • High
Authentication anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required the vulnerability can be exploited without an honest user taking any action
  • High
Exploit Complexity some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls)
  • Mid-High

Description of each analysis measures


Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2011-2671
JVN iPedia JVNDB-2011-000073