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 |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2021-39136 |
| JVN iPedia |
JVNDB-2021-000080 |