Adobe releases third unscheduled Flash security update

Software giant forced to act following discovery of flaw affecting video sharing site Dailymotion

Adobe Flash

Adobe has released its third Flash unscheduled security update this year, after video sharing site Dailymotion found an advert that redirected to an attacker-controlled page that could be used to take control of a user's system.

Adobe said in its alert: "A critical vulnerability (CVE-2015-0313) exists in Adobe Flash Player 16.0.0.296 and earlier versions for Windows and Macintosh. Successful exploitation could cause a crash and potentially allow an attacker to take control of the affected system. We are aware of reports that this vulnerability is being actively exploited in the wild via drive-by-download attacks against systems running Internet Explorer and Firefox on Windows 8.1 and below."

Paul Ducklin wrote on the Sophos blog: "This script tries to guess which vulnerabilities are most likely to work on your computer, based on browser version, available plugins, and other settings, and then lets rip one-by-one with specific exploits," until nothing happens, the browser crashes or one of the exploits succeeds and your computer has been taken over.

The zero-day exploit has been patched, but Adobe doesn't anticipate completely fixing the vulnerability until later this week.

Peter Pi, threat analyst at Trend Micro, said: "We've seen around 3,294 hits related to the exploit and, with an attack already seen in the wild, it's likely there are other attacks leveraging this zero-day, posing a great risk of compromise to unprotected systems."

Meanwhile, Adobe commented in a statement: "We are aware of reports that this vulnerability is being actively exploited in the wild via drive-by-download attacks against systems running Internet Explorer and Firefox on Windows 8.1 and below."

Last week, YouTube announced it has started to implement HTML5 by default in browsers to play videos rather than Flash because it said Flash couldn't support Adaptive Bitrate (ABR), which cuts down on buffering without compromising video quality.

Featured Resources

Four cyber security essentials that your board of directors wants to know

The insights to help you deliver what they need

Download now

Data: A resource much too valuable to leave unprotected

Protect your data to protect your company

Download now

Improving cyber security for remote working

13 recommendations for security from any location

Download now

Why CEOS should care about the move to SAP S/4HANA

And how they can accelerate business value

Download now

Recommended

Digital Shadows’ context-based security alerts expand sensitive doc management
Security

Digital Shadows’ context-based security alerts expand sensitive doc management

23 Nov 2020
More than half of businesses saw rising fraud levels this year
Security

More than half of businesses saw rising fraud levels this year

23 Nov 2020
Manchester United resists ‘sophisticated’ cyber attack
Security

Manchester United resists ‘sophisticated’ cyber attack

23 Nov 2020
MPs targeted with nearly three million malicious emails per month
Security

MPs targeted with nearly three million malicious emails per month

23 Nov 2020

Most Popular

Cisco acquires container security startup Banzai Cloud
Security

Cisco acquires container security startup Banzai Cloud

18 Nov 2020
macOS Big Sur is bricking some older MacBooks
operating systems

macOS Big Sur is bricking some older MacBooks

16 Nov 2020
46 million Animal Jam accounts leaked after comms software breach
Security

46 million Animal Jam accounts leaked after comms software breach

13 Nov 2020