Feeds

Cisco patches serious holes in voice-enabled offerings

Four updates in all

Using blade systems to cut costs and sharpen efficiencies

Cisco issued four updates that patch a raft of security holes in products running its Internetwork Operating System (IOS). Impacts included sustained denial of service attacks, data leakage and remote execution of code.

The most serious vulnerabilities reside in voice-enabled devices and Cisco Unified Communications Manager, which can allow an attacker to remotely execute malicious code. There are no workarounds for the flaws, which pertain to services such as Session Initiation Protocol, Media Gateway Control Protocol, Signaling protocols H.323, H.254, Real-time Transport Protocol and Facsimile reception.

"This one is bad, as in real bad," Johannes Ullrich, CTO for SANS Internet Storm Center, told The Reg. "I would probably expedite the testing process for that. "The other vulnerabilities, you want to be really careful about testing them and they don't seem to be overly critical."

Vulnerable IOS versions include various flavors of 12.3(4), 12.3(7), 12.3(8), 12.4 Mainline and 12.4T onward. Routers that are configured as SIP Public Switched Telephone Network Gateways and SIP Session Border Controllers are also vulnerable, as is the CAT6000-CMM card.

Other updates addressed a data leakage flaw when using IPv6 routing headers and a weakness in the IOS Next Hop Resolution Protocol that can result in a restart of the device or possible remote code execution.

A fourth patch plugs a hole in some 12.2-based IOS releases when configured to offer Secure Copy server functionality. Those vulnerabilities allow valid users, regardless of privilege level, to transfer files to and from an IOS device. To exploit it, an attacker would have to have access to port 22, which typically is open only on management interfaces.

Nonetheless, Immunity, a company that provides penetration testing tools, plans to add modules to its products that test for the vulnerability, said Kostya Kortchinsky, a senior researcher at the company.

"Anybody can exploit this without any skill in Cisco exploitation," he explained. "It doesn't need any overflow of any kind."

The patches were released the same day Cisco's website was inaccessible for about three hours. A spokeswoman later said the outage was the result of an accident during maintenance that cut off power to a San Jose data center. ®

Boost IT visibility and business value

More from The Register

next story
14 antivirus apps found to have security problems
Vendors just don't care, says researcher, after finding basic boo-boos in security software
Secure microkernel that uses maths to be 'bug free' goes open source
Hacker-repelling, drone-protecting code will soon be yours to tweak as you see fit
Only '3% of web servers in top corps' fully fixed after Heartbleed snafu
Just slapping a patched OpenSSL on a machine ain't going to cut it, we're told
How long is too long to wait for a security fix?
Synology finally patches OpenSSL bugs in Trevor's NAS
Israel's Iron Dome missile tech stolen by Chinese hackers
Corporate raiders Comment Crew fingered for attacks
Roll out the welcome mat to hackers and crackers
Security chap pens guide to bug bounty programs that won't fail like Yahoo!'s
HIDDEN packet sniffer spy tech in MILLIONS of iPhones, iPads – expert
Don't panic though – Apple's backdoor is not wide open to all, guru tells us
Researcher sat on critical IE bugs for THREE YEARS
VUPEN waited for Pwn2Own cash while IE's sandbox leaked
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Application security programs and practises
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Securing Web Applications Made Simple and Scalable
Learn how automated security testing can provide a simple and scalable way to protect your web applications.