Published:2021/11/16 Last Updated:2021/11/16
JVN#22515597
rwtxt vulnerable to cross-site scripting
Overview
rwtxt provided by Zack Scholl contains a cross-site scripting vulnerability.
Products Affected
- rwtxt versions prior to v1.8.6
Description
rwtxt provided by Zack Scholl is a light-weight content management system (CMS) that enables to share and/or view any text saved online. rwtxt contains a cross-site scripting vulnerability (CWE-79).
Impact
An arbitrary script may be executed on the web browser of the user who is accessing the website using rwtxt.
Solution
Update the software
Update the software to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Link |
| Zack Scholl | rwtxt |
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
Ito Reo of Mitsui Bussan Secure Directions, Inc. 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-2021-20848 |
| JVN iPedia |
JVNDB-2021-000102 |