Published:2020/02/06 Last Updated:2020/02/06
JVN#94435544
Movable Type vulnerable to cross-site scripting
Overview
Movable Type provided by Six Apart Ltd. contains a cross-site scripting vulnerability.
Products Affected
- Movable Type 7 r.4603 and earlier (Movable Type 7)
- Movable Type 6.5.2 and earlier (Movable Type 6.5)
- Movable Type Advanced 7 r.4603 and earlier (Movable Type Advanced 7)
- Movable Type Advanced 6.5.2 and earlier (Movable Type Advanced 6.5)
- Movable Type Premium 1.26 and earlier (Movable Type Premium)
- Movable Type Premium Advanced 1.26 and earlier (Movable Type Premium Advanced)
Description
Movable Type provided by Six Apart Ltd. contains a cross-site scripting vulnerability (CWE-79) in block editor and rich text editor.
Impact
An arbitrary script may be executed on the logged in user's web browser.
Solution
Update the Software
Update to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Status | Last Update | Vendor Notes |
|---|---|---|---|
| Six Apart Ltd. | Vulnerable | 2020/02/06 | Six Apart Ltd. website |
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:H/Au:N/C:N/I:P/A:N
Base Score:
2.6
| 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
Six Apart Ltd. reported this vulnerability to JPCERT/CC to notify users of its solution through JVN. JPCERT/CC and Six Apart Ltd. coordinated under the 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-2020-5528 |
| JVN iPedia |
JVNDB-2020-000009 |