Published:2022/09/09  Last Updated:2022/09/09

JVN#48120704
Movable Type plugin A-Form vulnerable to cross-site scripting

Overview

Movable Type plugin A-Form contains a cross-site scripting vulnerability.

Products Affected

  • A-Form versions prior to 4.1.1 (for Movable Type 7 Series)
  • A-Form versions prior to 3.9.1 (for Movable Type 6 Series)
The developer states that A-Member, A-Reserve, and A-Member Subscription Pack are affected too, because they contain an affected version of A-Form.

Description

Movable Type plugin A-Form provided by ARK-Web co., ltd. contains a cross-site scripting vulnerability (CWE-79).

Impact

An arbitrary script may be executed on the web browser of the user who accessed the site using the product.

Solution

Update the Software
Update A-Form to the latest version according to the information provided by the developer.

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Base Score: 6.1
Attack Vector(AV) Physical (P) Local (L) Adjacent (A) Network (N)
Attack Complexity(AC) High (H) Low (L)
Privileges Required(PR) High (H) Low (L) None (N)
User Interaction(UI) Required (R) None (N)
Scope(S) Unchanged (U) Changed (C)
Confidentiality Impact(C) None (N) Low (L) High (H)
Integrity Impact(I) None (N) Low (L) High (H)
Availability Impact(A) None (N) Low (L) High (H)
CVSS v2 AV:N/AC:M/Au:N/C:N/I:P/A:N
Base Score: 4.3
Access Vector(AV) Local (L) Adjacent Network (A) Network (N)
Access Complexity(AC) High (H) Medium (M) Low (L)
Authentication(Au) Multiple (M) Single (S) None (N)
Confidentiality Impact(C) None (N) Partial (P) Complete (C)
Integrity Impact(I) None (N) Partial (P) Complete (C)
Availability Impact(A) None (N) Partial (P) Complete (C)

Credit

hibiki moriyama of STNet, Incorporated reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2022-38972
JVN iPedia JVNDB-2022-000070