Feeds

Own a Cisco modem or wireless gateway? It might be owned by someone else, too

Remote code exec in HTTP server hands kit to bad guys

Protecting users from Firesheep and other Sidejacking attacks with SSL

A number of Cisco home network gateways have a security bug that allows attackers to hijack the devices remotely. A firmware update to close the hole is being rolled out to ISPs to deploy.

The networking giant said that certain Wireless Home Gateway products are vulnerable to a remote-code execution attack, which is triggered by sending a specially crafted HTTP request to the web server running on the hardware.

Cisco said "the vulnerability is due to incorrect input validation for HTTP requests," which allows "an unauthenticated, remote attacker to exploit a buffer overflow and cause arbitrary code execution."

"Successful exploitation could allow the attacker to crash the web server and execute arbitrary code with elevated privileges," we're told. "There are currently no known workarounds available for this vulnerability."

The vulnerable products are:

  • Cisco DPC3212 VoIP Cable Modem
  • Cisco DPC3825 8x4 DOCSIS 3.0 Wireless Residential Gateway
  • Cisco EPC3212 VoIP Cable Modem
  • Cisco EPC3825 8x4 DOCSIS 3.0 Wireless Residential Gateway
  • Cisco Model DPC3010 DOCSIS 3.0 8x4 Cable Modem
  • Cisco Model DPC3925 8x4 DOCSIS 3.0 with Wireless Residential Gateway with EDVA
  • Cisco Model DPQ3925 8x4 DOCSIS 3.0 Wireless Residential Gateway with EDVA
  • Cisco Model EPC3010 DOCSIS 3.0 Cable Modem
  • Cisco Model EPC3925 8x4 DOCSIS 3.0 with Wireless Residential Gateway with EDVA

According to Cisco, the flaw is present on the devices whether they are operating as internet access gateways or as wireless routers on home or small office gateways. The bug was reported to Cisco by Chris Watts of Tech Analysis.

The networking biz has distributed a patch to broadband providers to pass onto affected home and small office customers.

The HTTP web server is provided in the devices' firmware to allow them to be configured from across the public internet. For example, the documentation for the vulnerable DPC3825 and EPC3825 models reads: "The protocol HTTP is required for remote management. To remotely access the device, enter https://xxx.xxx.xxx.xxx:8080 (the x's represent the device's public Internet IP address, and 8080 represents the specified port) in your web browser's address field."

Although this remote management feature can be disabled in the aforementioned devices, Cisco says there is no workaround for the bug.

The disclosure comes just one day after Oracle threatened to drown admins in a deluge of 113 patches, including 20 for Java. Last week, Microsoft and Adobe posted their July scheduled security updates, fixing three critical bugs in total. ®

The next step in data security

More from The Register

next story
Israeli spies rebel over mass-snooping on innocent Palestinians
'Disciplinary treatment will be sharp and clear' vow spy-chiefs
Infosec geniuses hack a Canon PRINTER and install DOOM
Internet of Stuff securo-cockups strike yet again
THREE QUARTERS of Android mobes open to web page spy bug
Metasploit module gobbles KitKat SOP slop
'Speargun' program is fantasy, says cable operator
We just might notice if you cut our cables
Apple Pay is a tidy payday for Apple with 0.15% cut, sources say
Cupertino slurps 15 cents from every $100 purchase
YouTube, Amazon and Yahoo! caught in malvertising mess
Cisco says 'Kyle and Stan' attack is spreading through compromised ad networks
Hackers pop Brazil newspaper to root home routers
Step One: try default passwords. Step Two: Repeat Step One until success
Greater dev access to iOS 8 will put us AT RISK from HACKERS
Knocking holes in Apple's walled garden could backfire, says securo-chap
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
Security and trust: The backbone of doing business over the internet
Explores the current state of website security and the contributions Symantec is making to help organizations protect critical data and build trust with customers.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.