Wednesday 14 October 2015

Threat Buckler: Another New Zero Day exploit Hits Adobe Flash Play...

Threat Buckler: Another New Zero Day exploit Hits Adobe Flash Play...: After so much efforts of Adobe Flash Player attackers find a way New Zero-Day exploit Hits Adobe Flash Player.  Flash, attackers fro...

Another New Zero Day exploit Hits Adobe Flash Player Vulnerability




After so much efforts of Adobe Flash Player attackers find a way New Zero-Day exploit Hits Adobe Flash Player.  Flash, attackers from the Pawn Storm cyber-espionage campaign are exploiting yet another new zero-day in flash so they can surreptitiously install malware on victim computer.


It is advised to uninstall or disable the adobe Flash Player immediately before you will be in trap of hunter.

Fortunately, for the time being, this exploit is only being used against Government agencies and several foreign affairs ministries as part of a long-running espionage campaign carried out by a group known as Pawn Storm.


 Although Adobe has released a new patch yesterday which was having 69 Vulnerabilities out of which 13 was patched in their new Monthly Patch Release. Attackers come up with a new zero-day exploit that leave fully patched Flash Player Vulnerable.
“Based on researcher analysis, the Flash zero-day affects at least Adobe Flash Player versions 19.0.0.185 and 19.0.0.207”.

Flash Zero Day Exploit Flow:




                              

Trend Micro reported:

In this most recent campaign, Pawn Storm targeted several foreign affairs ministries from around the globe. The targets received spear phishing e-mails that contained links leading to the exploit. The emails and URLs were crafted to appear like they lead to information about current events, with the email subjects containing the following topics:

“Suicide car bomb targets NATO troop convoy Kabul”
“Syrian troops make gains as Putin defends air strikes”
“Israel launches airstrikes on targets in Gaza”
“Russia warns of response to reported US nuke buildup in Turkey, Europe”
“US military reports 75 US-trained rebels return Syria”

It’s worth noting that the URLs hosting the new Flash zero-day exploit are similar to the URLs seen in attacks that targeted North Atlantic Treaty Organization (NATO) members and the White House in April this year.

Patch Not Available For Latest  Zero Day Exploit 

As of now no patch available for these Latest Exploit even with latest up-to date installation.
Adobe is working on this latest Flaw to patch.

Till the time being please Uninstall or disable Adobe Flash Player for being safe.

As of now  Google Chrome has also begun blocking auto-playing Flash ads by default.



Wednesday 16 September 2015

Classes of IP Addresses

Basics of Networking-IP Address

IP Addresses:

It is an address in a network which is used for communication between two computer. In Laymen terms as we need an address to send postcard or Letters from one destination to another similarly in network while sending mails or whenever we need communication computer uses unique identifiers to send information to specific computers on a Network.
TCP/IP is standard for how to communicate on the network.

Two Versions of IP Addresses are there:
IPV4:  IP’s displayed in dotted Decimal Notation. It uses 32 binary bits to create a secure unique address separated on the Network.
Expressed by four numbers separated by dots.
For ex: 192.168.10.1

IPV6: It uses 128 binary bits to create a single unique address on the Network.
Expressed in eight groups of hexadecimal digits (base-0). Numbers are separated by colons.
For ex: 2001:dcab::3257:9652

Classes of IP Addresses:

Five classes are defined on the base of IP Hierarchy.


In these classes of IP Addresses:
0: Reserved and represents all IP addresses.
127: Loop back IP Address. Generally used for testing.
255: Reserved for Broadcasting Purposes

IP Address Class
No. of bits for NID/HID
No. of N/w Id bits
Possible number of N/w per Id
No. of Host IP per N/W Id
Class A
     8/24
  8-1=7
  27 -2=126
224-2 = 166,277,274
Class B
    16/16
 16-2=14
  214 =16,384
216-2= 65,534
Class C
     24/8
 24-3=21
 221 = 2,09,752
28-2=254

                                IP Address based on Class Networks
No. of Networks = 2networkbits
No. of Hosts/Network = 2hostbits -2

Note: All classes are identified by their first octet of IP addresses:

Class A Addresses

The first bit of first octet is always set to 0(zero).
As defined above it lies in b/w 1-126
            00000000-011111111
                            1-126
 Default Subnet Mask of Class A Address: 255.0.0.0
 127.x.x.x reserved for loop back IP Address.

Class B Addresses

The first two bits of first octet are always set to 10.
It lies b/w 128-191
              100000000-10111111
                           128-191
     Default Subnet Mask of Class A Address: 255.255.0.0     


Class C Addresses

 The first three bits of first octet always set to 110
  It lies in b/w 192-223
                    11000000-11011111
                                192-223
     Default Subnet Mask of Class C Address: 255.255.255.0

Class D Addresses

 The first two bits of first octet are always set to 1110
 It lies in b/w 224-239
            11100000-11101111
                        224-239
Reserved for Multi-casting. No Need to extract the host address from the IP address as there is data not designed for particular host as we are using it for broadcasting purposes.
Don’t have any Subnet Mask.

Class E Addresses

  Only using it for Experimental purposes.

  It lies in b/w 240-254.