Serious security hole plugged in RealPlayer and HelixPlayer
Shhh, don't tell anyone
RealNetworks has patched a vulnerability in its RealPlayer and HelixPlayer software that made it possible for attackers to run arbitrary code on a victim's machine. The security hole affects applications running on Windows, Mac and Linux platforms.
The vulnerability exists within the code that handles time formats for a feature in the applications that acts as a wall clock, according to iDefense Labs, which first discovered the flaw. An attacker can exploit the vulnerability by effecting a stack-based buffer overflow that allows for the execution of malware.
The gaping hole has been plugged, but you'd never know it from browsing the RealPlayer blog or the company's security advisories. That's unfortunate. Given the severity of the vulnerability, the updates - available here for RealPlayer and here for HelixPlayer - should be installed immediately.
RealNetworks spokesman Matt Graves said the lack of disclosure is the result of the company not knowing the iDefense advisory was going to be issued on Wednesday. The company is scrambling to add an advisory to its own website. (It is unclear if a messaging system within the applications warns users of the vulnerability.)
To exploit the flaw, an attacker would first have to prompt a user to open a specially crafted SMIL file. Simply luring a RealPlayer or HelixPlayer user to a booby-trapped website is sufficient for accomplishing this. SMIL files are written in an XML markup language that uses the Synchronized Multimedia Integration Language used to code things such as for timing, layout, animations, visual transitions, and media embedding.
The vulnerability has been confirmed in version 10 and 10.5-GOLD of RealPlayer for Windows, version 10 of RealPlayer for Mac, RealPlayer Enterprise and and HelixPlayer, an open source version of RealPlayer for Linux. Earlier versions of those programs are presumed susceptible as well, according to to iDefense. ®
How about the folks, such as myself, who've taken the Real Alternative route? Does this effect me?
What platform(s) is the vulnerability on?
I can't seem to see any mention of exactly what platforms this vulnerability is on. iDefense Labs mention generic "Windows" just once and the CVE candidate advisory notice actually completely fails to state the platforms affected at all.
BTW, Real have been quite shoddy at providing updates for the Linux version of Real Player 10 - the RPM downloadable from http://www.real.com/linux/ is actually dated 14th August 2006! It's version 10.0.8.805-20060718, implying that it was actually a snapshot of code as of 18th July 2006, so it's got 3 weeks to "celebrate" its anniversary....
RealPlayer security update (?) for Macs
RealPlayer 11 isn't available for Macs; shame on Real!
For RealPlayer 10, the latest update seems to be 10.1.0 (490). Its release notes are dated 4/07 and refer to unspecified security fixes.
So I couldn't tell whether these latest vulnerabilities are addressed or not.