yersinia

生成树 1: 发送配置BPDU的DoS攻击 让我们发送一些配置BPDU，声称自己是根！！！通过持续发送根路径开销为0、桥ID随机生成（因此根ID相同）以及其余字段使用默认值的配置BPDU，我们试图干扰附近的交换机，导致其STP引擎在解析和重新计算时发生DoS。 源MAC：随机生成。 目的MAC：01:80:c2:00:00:00 桥ID：8000:sourcemac 根ID：8000:sourcemac Hello时间：2 转发延迟：15 最大老化时间：20 根路径开销：0 01:20:26: STP: VLAN0001 heard root 32768-d1bf.6d60.097b o...

yersinia

Spanning Tree 1: DOS attack sending conf BPDUs Let's send some conf BPDUs claiming be root!!! By sending continously conf BPDU with root pathcost 0, randomly generated bridge id and therefore the same root id, and some default values for other fields, we try to annoy the switches close to us,...

RE: DoS code for Cisco VLAN Trunking Protocol Vulnerability

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, This is Paul Oxman with Cisco PSIRT. For mitigations and workarounds, please consult the Cisco Security Response available at: http://www.cisco.com/warp/public/707/cisco-sr-20081105-vtp.shtml Regards From: showrun.lee mailto:[email protected]...

Cisco - VLAN Trunking Protocol Denial of Service

/DoS code for Cisco VLAN Trunking Protocol Vulnerability vulerability discription: http://www.cisco.com/warp/public/707/cisco-sr-20081105-vtp.shtml To Known: 1.the switch must in Server/Client Mode. 2.the port ,attacker connected,must be in trunk Mode. Cisco Ethernet ports with no configuration a...

Cisco - VLAN Trunking Protocol Denial of Service

Cisco - VLAN Trunking Protocol Denial of Service /DoS code for Cisco VLAN Trunking Protocol Vulnerability vulerability discription: http://www.cisco.com/warp/public/707/cisco-sr-20081105-vtp.shtml To Known: 1.the switch must in Server/Client Mode. 2.the port ,attacker connected,must be in trunk...

Cisco VLAN Trunking Protocol Denial Of Service

/DoS code for Cisco VLAN Trunking Protocol Vulnerability vulerability discription: http://www.cisco.com/warp/public/707/cisco-sr-20081105-vtp.shtml To Known: 1.the switch must in Server/Client Mode. 2.the port ,attacker connected,must be in trunk Mode. Cisco Ethernet ports with no configuration a...

S21sec-034-en: Cisco VTP DoS vulnerability

ID: S21SEC-034-en Title: Cisco VTP Denial Of Service Date: 26/01/2007 Status: Vendor contacted, bug fixed Severity: Medium - DoS - remote from the local subnet Scope: Cisco Catalyst Switch denial of service Platforms: IOS Author: Alfredo Andres Omella, David Barroso Berrueta Location:...

CVE-2005-4440

The 802.1q VLAN protocol allows remote attackers to bypass network segmentation and spoof VLAN traffic via a message with two 802.1q tags, which causes the second tag to be redirected from a downstream switch after the first tag has been stripped, as demonstrated by Yersinia, aka "double-tagging...

CVE-2005-4440

The CVE describes a vulnerability in the 802.1q VLAN protocol where a crafted frame containing two 802.1q tags can cause the second tag to be redirected after the first is stripped, enabling a remote attacker to bypass network segmentation and spoof VLANs. Demonstrated by the tool Yersinia (doubl...