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
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2021-20848
JVN iPedia JVNDB-2021-000102