Users still running Java 6 vulnerable to zero-day exploit

Share this article:

A "critical" vulnerability impacting the out-of-date, but still widely used, Java 6 platform has been added to a commercially available exploit kit.

Timo Hirvonen, a senior analyst at security firm F-Secure, told SCMagazine.com that on Monday he first saw the bug (CVE-2013-2463) exploited in the wild via the Neutrino exploit kit. And although those who've upgraded to the latest Java version, 7u25 released in June, are patched against the threat, users running Java 6 remain vulnerable to attacks.

Oracle, which maintains Java, dispatched its final fix for Java 6 in April, and now only organizations with support contracts have access to updates.

“An attacker can execute their own code on the system to infect it with malware,” Hirvonen said of the exploit. “It might be that you get some links in spam, and that link leads to this Neutrino exploit kit, or you visit an infected website,” and unknowingly install the exploit kit, a process known as drive-by download.

Hirvonen told SCMagazine.com that the exploit's proof-of-concept was made public last week, prior to in-the-wild attacks surfacing on Monday.

According to Oracle's June critical patch update advisory, the vulnerability was assigned a score of 10 out of 10 on Oracle's implementation of the Common Vulnerability Scoring System, the highest mark. The vulnerability lies in Java Runtime Environment's 2D sub-component, which is used to make two-dimensional graphics.

Wolfgang Kandek, CTO of cloud security firm Qualys, told SCMagazine.com on Tuesday that the use of Java 6 still is prevalent, opening up a significant number of users to the threat.

After analyzing millions of endpoints throughout May, June and July, the firm found that about half of the users were still running Java 6 installations.

For organizations concerned about disrupting mission-critical applications, if they try to disable or update Java 6, considering many software applications still depend on the version, they should consider whitelisting Java applets through their browsers, a feature supported by Internet Explorer and Google Chrome, Kandek said.

However, the safest option, he advised, is to bite the bullet and upgrade to the patched version of the platform.

“[Java 6] is very widely used, and since it is out of support since April, there's no way to fix this other than to go to the Java 7 version,” Kandek said.

Share this article:
You must be a registered member of SC Magazine to post a comment.

Sign up to our newsletters

More in News

LEADS Act addresses gov't procedure for requesting data stored abroad

LEADS Act addresses gov't procedure for requesting data ...

Senators introduced the legislation last week as a means of amending the Electronic Communications Privacy Act (ECPA).

Report: Intrustion prevention systems made a comeback in 2013

Report: Intrustion prevention systems made a comeback in ...

A new report indicates that intrusion prevention systems grew 4.2 percent in 2013, with growth predicted to continue.

Mobile device security sacrificed for productivity, study says

Mobile device security sacrificed for productivity, study says

A Ponemon Institute study, sponsored by Raytheon, revealed that employees increasingly use mobile devices for work but cut corners and circumvent security.