[Japanese]

JVNDB-2020-000030

Multiple vulnerabilities in Movable Type

Overview

Movable Type provided by Six Apart Ltd. contains multiple vulnerabilities listed below.
* HTML attribute value injection vulnerability (CWE-74) - CVE-2020-5574
* Cross-site scripting due to a flaw in processing multiple query strings (CWE-79) - CVE-2020-5575
* Cross-site request forgery (CWE-352) - CVE-2020-5576
* Unrestricted upload of file with specific extentions (CWE-434) - CVE-2020-5577

The following researchers reported these vulnerabilities to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

CVE-2020-5574, CVE-2020-5575, CVE-2020-5576
Toshitsugu Yoneyama of Mitsui Bussan Secure Directions, Inc.

CVE-2020-5577
Yuji Tounai of Mitsui Bussan Secure Directions, Inc.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 6.3 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics 6.5 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: Single Instance
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
The above CVSS base scores have been assigned for CVE-2020-5577

CVSS V3 Severity:
Base Metrics: 4.7 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: None
  • 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
The above CVSS base scores have been assigned for CVE-2020-5574

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: 2.6 (Low) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
The above CVSS base scores have been assigned for CVE-2020-5575

CVSS V3 Severity:
Base Metrics: 4.3 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics: 2.6 (Low) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
The above CVSS base scores have been assigned for CVE-2020-5576
Affected Products


Six Apart, Ltd.
  • Movable Type 7 r.4606 (7.2.1) and earlier (Movable Type 7)
  • Movable Type 6.5.3 and earlier (Movable Type 6.5)
  • Movable Type 6.3.11 and earlier (Movable Type 6.3)
  • Movable Type Advanced 6.3.11 およびそれ以前 (Movable Type Advanced 6.3系)
  • Movable Type Advanced 6.5.3 およびそれ以前 (Movable Type Advanced 6.5系)
  • Movable Type Advanced 7 r.4606 (7.2.1) およびそれ以前 (Movable Type Advanced 7系)
  • Movable Type Premium 1.29 およびそれ以前
  • Movable Type Premium Advanced 1.29 およびそれ以前
  • Movable Type for AWS 7 r.4606 (7.2.1) およびそれ以前 (Movable Type for AWS 7系)

Impact

* A remote attacker may inject arbitrary HTML attribute value. - CVE-2020-5574
* An arbitrary script may be executed on a logged in user's web browser. - CVE-2020-5575
* If a user views a malicious page while logged in, unintended operations may be performed. - CVE-2020-5576
* A user who can upload files may upload arbitrary files and execute php script. - CVE-2020-5577
Solution

[Update the Software]
Update the software to the latest version according to the information provided by the developer.
Vendor Information

Six Apart, Ltd.
CWE (What is CWE?)

  1. Cross-Site Request Forgery(CWE-352) [IPA Evaluation]
  2. Cross-site Scripting(CWE-79) [IPA Evaluation]
  3. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2020-5574
  2. CVE-2020-5575
  3. CVE-2020-5576
  4. CVE-2020-5577
References

  1. JVN : JVN#28806943
  2. National Vulnerability Database (NVD) : CVE-2020-5574
  3. National Vulnerability Database (NVD) : CVE-2020-5575
  4. National Vulnerability Database (NVD) : CVE-2020-5576
  5. National Vulnerability Database (NVD) : CVE-2020-5577
Revision History

  • [2020/05/13]
      Web page was published


Date Public2020/05/13
Date First Published2020/05/13
Date Last Updated2020/05/13