[Japanese]

JVNDB-2016-000152

simple chat vulnerable to cross-site scripting

Overview

simple chat provided by Let's PHP! contains a cross-site scripting vulnerability (CWE-79).

Yuji Tounai of NTT Communications Corporation reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 6.1 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 4.3 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products


Let's PHP!
  • simple chat prior to 2016/08/15 release

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 Information

Let's PHP!
CWE (What is CWE?)

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

  1. CVE-2016-4851
References

  1. JVN : JVN#42262137
  2. National Vulnerability Database (NVD) : CVE-2016-4851
Revision History

  • [2016/08/23]
      Web page was published
    [2016/09/05]
      References : Content was added

Date Public2016/08/23
Date First Published2016/08/23
Date Last Updated2016/09/05