Google has another try at patching Stagefright flaw

Google has sent the patch to its partners and will fix its Nexus line of devices

Google has released another patch for the Stagefright vulnerability after a security firm said the first one didn't fix it.

Hundreds of millions of Android devices are vulnerable to Stagefright. A device can be compromised merely through the receipt of a specially crafted multimedia message (MMS), so an attacker needs only the victim's phone number.

The flaw was found by Joshua Drake at mobile security firm Zimperium, which submitted a set of patches along with its big report. Google released its first patch for Stagefright last week.

But a researcher with another security firm, Exodus Intelligence, discovered a flaw in the patch intended to fix Stagefright. He crafted a malicious MP4 file that could bypass the fix. Exodus notified Google on Aug. 7 but didn't get a response and decided to make the information public, Aaron Portnoy, an Exodus vice president, said in a blog post. Google has since acknowledged Exodus's report and assigned it as CVE-2015-3864.

Portnoy wrote that he was surprised such a major vulnerability didn't get an effective patch the first time around.

"Google employs a tremendously large security staff, so much so that many members dedicate time to audit other vendor's software and hold them accountable to provide a code fix within a deadline period," he wrote. "If Google cannot demonstrate the ability to successfully remedy a disclosed vulnerability affecting their own customers then what hope do the rest of us have?"

In a statement Thursday, Google said it had sent its latest fix to its partners. Devices in its Nexus line, including the Nexus 4, 5, 6, 7, 9, 10 and the Nexus Player, will receive an over-the-air update as part of the company's monthly patch update for September.

Google said at the Black Hat security conference earlier this month it would issue monthly security patches for Android devices after Stagefright exposed millions of devices to attack. Major vendors such as Microsoft, Adobe Systems and Oracle have for years released security fixes on a regular schedule.

But the problem with mobile devices is that operators play a key role in distributing patches. While for the last three years Google has sent patches to mobile operators, it was up to those companies to send the patches to users. That process happened slowly if at all.

Major Android manufacturers including Samsung and LG have also committed to working with carrier partners to distribute monthly patches.

Send news tips and comments to jeremy_kirk@idg.com. Follow me on Twitter: @jeremy_kirk

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection

Tags Googlesecuritymobile securityExploits / vulnerabilities

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Jeremy Kirk

IDG News Service
Show Comments

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Matthew Stivala

HP OfficeJet 250 Mobile Printer

The HP OfficeJet 250 Mobile Printer is a great device that fits perfectly into my fast paced and mobile lifestyle. My first impression of the printer itself was how incredibly compact and sleek the device was.

Armand Abogado

HP OfficeJet 250 Mobile Printer

Wireless printing from my iPhone was also a handy feature, the whole experience was quick and seamless with no setup requirements - accessed through the default iOS printing menu options.

Azadeh Williams

HP OfficeJet Pro 8730

A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.

Andrew Grant

HP OfficeJet Pro 8730

I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.

Ed Dawson

HP OfficeJet Pro 8730

As a freelance writer who is always on the go, I like my technology to be both efficient and effective so I can do my job well. The HP OfficeJet Pro 8730 Inkjet Printer ticks all the boxes in terms of form factor, performance and user interface.

Michael Hargreaves

Windows 10 for Business / Dell XPS 13

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?