Man page for apt-get yersinia Command
This tutorial shows the man page for man yersinia in linux.
Open terminal with 'su' access and type the command as shown below:
Result of the Command Execution shown below:
Yersinia A FrameWork for layer 2 attacks
yersinia [ hVGIDd] [ l logfile] [ c conffile] protocol [ M] [protocol_options]
yersinia is a framework for performing layer 2 attacks. The following protocols have been implemented in Yersinia current version: Spanning Tree
Protocol (STP), VLAN Trunking Protocol (VTP), Hot Standby Router Protocol (HSRP), Dynamic Trunking Protocol (DTP), IEEE 802.1Q, Cisco Discovery
Protocol (CDP), Dynamic Host Configuration Protocol (DHCP) and, finally, the Inter Switch Link Protocol (ISL).
Some of the attacks implemented will cause a DoS in a network, other will help to perform any other more advanced attack, or both. In addition,
some of them will be first released to the public since there isn't any public implementation.
Yersinia will definitely help both pen testers and network administrators in their daily tasks.
Some of the mentioned attacks are DoS attacks, so TAKE CARE about what you're doing because you can convert your network into an UNSTABLE one.
A lot of examples are given at this page EXAMPLES section, showing a real and useful program execution.
G Start a graphical GTK session.
Start an interactive ncurses session.
Start the network listener for remote admin (Cisco CLI emulation).
d Enable debug messages.
Save the current session to the file logfile. If logfile exists, the data will be appended at the end.
Read/write configuration variables from/to conffile.
M Disable MAC spoofing.
The following protocols are implemented in yersinia current version:
Spanning Tree Protocol (STP and RSTP)
Cisco Discovery Protocol (CDP)
Hot Standby Router Protocol (HSRP)
Dynamic Host Configuration Protocol (DHCP)
Dynamic Trunking Protocol (DTP)
VLAN Trunking Protocol (VTP)
Inter Switch Link Protocol (ISL)
Spanning Tree Protocol (STP): is a link management protocol that provides path redundancy while preventing undesirable loops in the network. The
supported options are:
BPDU version (0 STP, 2 RSTP, 3 MSTP)
BPDU type (Configuration, TCN)
id id BPDU ID
BPDU root path cost
BPDU Root ID
BPDU Bridge ID
BPDU Port ID
BPDU Message Age
max age secs
BPDU Max Age (default is 20)
BPDU Hello Time (default is 2)
BPDU Forward Delay
Source MAC address
Destination MAC address
Set network interface to use
Attack to launch
Cisco Discovery Protocol (CDP): is a Cisco propietary Protocol which main aim is to let Cisco devices to communicate to each other about their
device settings and protocol configurations. The supported options are:
MAC Source Address
MAC Destination Address
Time To Live
Device IOS Version
Device Duplex Configuration
Device IP Prefix
Device Protocol Hello
Device VTP Management Domain
Device Native VLAN
Device VoIP VLAN Reply
Device VoIP VLAN Query
Device Trust Bitmap
Device Untrusted CoS
Device System Name
Device System ObjectID
Device Management Address
Attack to launch
Hot Standby Router Protocol (HSRP):
Inter Switch Link Protocol (ISL):
VLAN Trunking Protocol (VTP):
Dynamic Host Configuration Protocol (DHCP):
Dynamic Trunking Protocol (DTP):
Attacks Implemented in STP:
0: NONDOS attack sending conf BPDU
1: NONDOS attack sending tcn BPDU
2: DOS attack sending conf BPDUs
3: DOS attack sending tcn BPDUs
4: NONDOS attack Claiming Root Role
5: NONDOS attack Claiming Other Role
6: DOS attack Claiming Root Role with MiTM
Attacks Implemented in CDP:
0: NONDOS attack sending CDP packet
1: DOS attack flooding CDP table
2: NONDOS attack Setting up a virtual device
Attacks Implemented in HSRP:
0: NONDOS attack sending raw HSRP packet
1: NONDOS attack becoming ACTIVE router
2: NONDOS attack becoming ACTIVE router (MITM)
Attacks Implemented in DHCP:
0: NONDOS attack sending RAW packet
1: DOS attack sending DISCOVER packet
2: NONDOS attack creating DHCP rogue server
3: DOS attack sending RELEASE packet
Attacks Implemented in DTP:
0: NONDOS attack sending DTP packet
1: NONDOS attack enabling trunking
Attacks Implemented in 802.1Q:
0: NONDOS attack sending 802.1Q packet
1: NONDOS attack sending 802.1Q double enc. packet
2: DOS attack sending 802.1Q arp poisoning
Attacks Implemented in VTP:
0: NONDOS attack sending VTP packet
1: DOS attack deleting all VTP vlans
2: DOS attack deleting one vlan
3: NONDOS attack adding one vlan
4: DOS attack Catalyst zero day
Attacks Implemented in ISL:
None at the moment
The GTK GUI ( G) is a GTK graphical interface with all of the yersinia powerful features and a professional 'look and feel'.
The ncurses GUI ( I) is a ncurses (or curses) based console where the user can take advantage of yersinia powerful features.
Press 'h' to display the Help Screen and enjoy your session :)
The Network Daemon ( D) is a telnet based server (ala Cisco mode) that listens by default in port 12000/tcp waiting for incoming telnet connec
It supports a CLI similar to a Cisco device where the user (once authenticated) can display different settings and can launch attacks without hav
ing yersinia running in her own machine (specially useful for Windows users).
Send a Rapid Spanning Tree BPDU with port role designated, port state agreement, learning and port id 0x3000 to eth1:
yersinia stp attack 0 version 2 flags 5c portid 3000 interface eth1
Start a Spanning Tree nonDoS root claiming attack in the first nonloopback interface (keep in mind that this kind of attack will use the first
BPDU on the network interface to fill in the BPDU fields properly):
yersinia stp attack 4
Start a Spanning Tree DoS attack sending TCN BPDUs in the eth0 interface with MAC address 66:66:66:66:66:66:
yersinia stp attack 3 source 66:66:66:66:66:66
The README file contains more in depth documentation about the attacks.
Yersinia is Copyright (c)
Alfredo Andres Omella
David Barroso Berrueta
Yersinia v0.7 $Date: 2006/02/17 22:48:40 $ YERSINIA(8)