[Japanese]

JVNDB-2020-000908

Keijiban Tsumiki vulnerable to OS command injection

Overview

Keijiban Tsumiki provided by Mash room - Free CGI - is a CGI to provide Bulletin Board System (BBS) functions.
Keijiban Tsumiki contains an OS command injection vulnerability (CWE-78).

During the meeting of Committee for authorizing the disclosure of unresolved vulnerabilities held on January 16, 2020, it was judged that an advisory for this vulnerability shall be disclosed since all the criteria and conditions described below which are stated in Standards for Handling Vulnerability related Information of Software Products and Other and Information Security Early Warning Partnership Guideline have been satisfied.

1. The developer of the product is unreachable
2. Existence of vulnerability has been verified
3. Not disclosing this case may result in the risk that product users will have no means to know of the existence of the vulnerability in the product
4. There are no particular reasons that would make disclosure inappropriate
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 7.3 (High) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics 7.5 (High) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products


Mash room - Free CGI-
  • BBS Tsumiki v1.15

The above is the software product and version that have been reported.
Impact

A remote attacker may execute an arbitrary OS command.
Solution

[Consider stop using Keijiban Tsumiki v1.15]
Since the developer was unreachable, existence of any mitigations is unknown.
Vendor Information

CWE (What is CWE?)

  1. OS Command Injection(CWE-78) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2020-5561
References

  1. JVN : JVN#88277644
  2. National Vulnerability Database (NVD) : CVE-2020-5561
Revision History

  • [2020/03/24]
      Web page was published