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
hackernews.png
reddit.png

 

Latest posts:

Haroon Meer and Adrian Sanabria to deliver VB2019 closing keynote

New additions to the VB2019 conference programme include a closing keynote address from Thinkst duo Haroon Meer and Adrian Sanabria and a talk on attacks against payment systems.

Free VB2019 tickets for students

Virus Bulletin is excited to announce that, thanks to generous sponsorship from Google Android, we are able to offer 20 free tickets to students who want to attend VB2019.

VB2018 paper: Lazarus Group: a mahjong game played with different sets of tiles

The Lazarus Group, generally linked to the North Korean government, is one of the most notorious threat groups seen in recent years. At VB2018 ESET researchers Peter Kálnai and Michal Poslušný presented a paper looking at the group's various…

Book your VB2019 ticket now for a chance to win a ticket for BSides London

Virus Bulletin is proud to sponsor this year's BSides London conference, which will take place next week, and we have a number of tickets to give away.

First 11 partners of VB2019 announced

We are excited to announce the first 11 companies to partner with VB2019, whose support will help ensure a great event.

We have placed cookies on your device in order to improve the functionality of this site, as outlined in our cookies policy. However, you may delete and block all cookies from this site and your use of the site will be unaffected. By continuing to browse this site, you are agreeing to Virus Bulletin's use of data as outlined in our privacy policy.