LISTSERV 17 - Reflected Cross Site Scripting (XSS)

2023-03-3000:00:00

Shaunt Der-Grigorian

www.exploit-db.com

137

listserv 17

cross site scripting

remote attack

arbitrary javascript

html

cve-2022-39195

web templates

windows server 2019

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

AI Score

6.3

Confidence

High

EPSS

0.003

Percentile

66.0%

JSON

# Exploit Title: LISTSERV 17 - Reflected Cross Site Scripting (XSS)
# Google Dork: inurl:/scripts/wa.exe
# Date: 12/01/2022
# Exploit Author: Shaunt Der-Grigorian
# Vendor Homepage: https://www.lsoft.com/
# Software Link: https://www.lsoft.com/download/listserv.asp
# Version: 17
# Tested on: Windows Server 2019
# CVE : CVE-2022-39195

A reflected cross-site scripting (XSS) vulnerability in the LISTSERV 17 web interface allows remote attackers to inject arbitrary JavaScript or HTML via the "c" parameter.

To reproduce, please visit
http://localhost/scripts/wa.exe?TICKET=test&c=%3Cscript%3Ealert(1)%3C/script%3E
(or whichever URL you can use for testing instead of localhost).

The "c" parameter will reflect any value given onto the page.

# Solution
This vulnerability can be mitigated by going under "Server Administration" to "Web Templates" and editing the BODY-LCMD-MESSAGE web template. Change &+CMD; to &+HTMLENCODE(&+CMD;); .