Adobe issues patch for yet another Flash Player zero-day

Posted by   Virus Bulletin on   Feb 5, 2015

CVE-2015-0313 used in the wild as long ago as December.

Adobe has just issued an out-of-band patch for its Flash Player to fix a zero-day vulnerability that is actively being exploited in the wild.

You may be forgiven for thinking you had already patched this two weeks ago when Flash Player version 16.0.0.287 fixed CVE-2015-0310, or last week when version 16.0.0.296 fixed CVE-2015-0311, another vulnerability that was being used in exploit kits in the wild.

This, however, is yet another vulnerability: CVE-2015-0313, which is being used against Internet Explorer and Firefox users.

This time it is not the Angler exploit kit that is infecting users, but the relatively unknown 'Hanjuan' kit, as Trend Micro reports. A number of researchers, including F-Secure's Timo Hirvonen, believe that Hanjuan's use of the vulnerability may go back as far as December last year.

CVE-2015-0313 is a use-after-free vulnerability in Flash's handling of fast memory access to 'domain memory'. SpiderLabs's Ben Hayak has analysed the vulnerability here, with Trend Micro's Peter Pi providing another analysis here.

Last week, we published the VB2014 paper 'Ubiquitous Flash, ubiquitous exploits, ubiquitous mitigation' from Microsoft researchers Chun Feng and Elia Florio. This paper analyses two earlier vulnerabilities in Flash Player's implementation of domain memory opcode and also serves as a good general introduction to the subject. You can read their paper here in HTML-format, or download it here as a PDF.

While updating to Flash Player version 16.0.0.305 should be given the highest priority, users might also want to consider making Flash click-to-play in all their browsers. Unlike NoScript, which does the same to JavaScript, it doesn't seriously impact the browsing experience. Graham Cluley explains how to enable this feature in the five most popular browsers.

  By making Flash Player click-to-play, even Adobe can't run Flash without your permission.

Posted on 05 February 2015 by Martijn Grooten

twitter.png
fb.png
linkedin.png
googleplus.png
reddit.png

 

Latest posts:

Firefox 59 to make it a lot harder to use data URIs in phishing attacks

Firefox developer Mozilla has announced that, as of version 59 of the browser, many kinds of data URIs, which provide a way to create "domainless web content", will not be rendered in the browser, thus making this trick - used in various phishing…

Standalone product test: FireEye Endpoint

Virus Bulletin ran a standalone test on FireEye's Endpoint Security solution.

VB2017 video: Consequences of bad security in health care

Jelena Milosevic, a nurse with a passion for IT security, is uniquely placed to witness poor security practices in the health care sector, and to fully understand the consequences. Today, we publish the recording of a presentation given by Jelena at…

Vulnerabilities play only a tiny role in the security risks that come with mobile phones

Both bad news (all devices were pwnd) and good news (pwning is increasingly difficult) came from the most recent mobile Pwn2Own competition. But the practical security risks that come with using mobile phones have little to do with vulnerabilities.

VB2017 paper: The (testing) world turned upside down

At VB2017 in Madrid, industry veteran and ESET Senior Research Fellow David Harley presented a paper on the state of security software testing. Today we publish David's paper in both HTML and PDF format.