Published:2021/08/27  Last Updated:2021/08/27

JVN#14134801
baserCMS vulnerable to cross-site scripting

Overview

baserCMS provided by baserCMS Users Community contains a cross-site scripting vulnerability.

Products Affected

  • baserCMS versions prior to 4.5.1

Description

baserCMS provided by baserCMS Users Community contains a cross-site scripting vulnerability (CWE-79).

Impact

An arbitrary script may be executed on the user's web browser.

Solution

Update the software
Update the software to the latest version according to the information provided by the developer.
The developer released baserCMS 4.5.1 that contains a fix for this vulnerability.

Vendor Status

Vendor Status Last Update Vendor Notes
baserCMS Users Community Vulnerable 2021/08/27 baserCMS Users Community website

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Base Score: 4.8
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:S/C:N/I:P/A:N
Base Score: 3.5
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

AkagiYusuke of NTT-ME CORPORATION 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-2021-39136
JVN iPedia JVNDB-2021-000080