JVN#34207650: Multiple cross-site scripting vulnerabilities in Webmin

Overview

Webmin contains multiple cross-site scripting vulnerabilities.

Products Affected

Webmin versions prior to 1.830

Description

Webmin contains multiple cross-site scripting vulnerabilities (CWE-79) due to issues in outputting error messages into a HTML page and the function to edit the database.

Impact

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

Solution

Update the software
Update to the latest version according to the information provided by the developer.

Vendor Status

Vendor	Link
Webmin	Strip out unsafe HTML from error messages
	Downloads

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

Toshitsugu Yoneyama 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-2017-2106
JVN iPedia	JVNDB-2017-000022

Update History

2017/02/09: Fixed link for JVN iPedia under Other Information

JVN#34207650 Multiple cross-site scripting vulnerabilities in Webmin