April 2012

The H-Online: A new version of NVIDIA’s proprietary UNIX graphics drivers for Linux, Solaris and FreeBSD fixes a security vulnerability (CVE-2012-0946) that allowed attackers to read and write arbitrary system memory in order to, for example, obtain root privileges. To take advantage of the vulnerability, an attacker must have access permission for some device files – which, for systems with these drivers, is typically the case for users who can launch a graphical interface as 3D acceleration and some other features cannot be used otherwise. ...

The H-Online: The Tuesday after the Easter weekend, 10 April, is set to be a busy one for system administrators as Microsoft and Adobe have sent out notifications that they will both be issuing fixes for critical vulnerabilities in their products. Microsoft’s April notification says there will be four critical advisories concerning Microsoft Windows, Internet Explorer, .NET Framework, Office, SQL Server, Microsoft Server and Developer tools, which all lead to remote code execution. A fifth remote code execution vulnerability in Office is marked as important, as is a sixth information disclosure issue in Microsoft’s Forefront United Access Gateway. The critical bulletins will affect all versions of Windows, from Windows XP SP3 to Windows Server 2008R2. One critical bulletin for Internet Explorer covers IE 6, 7, 8 and 9 ...

The H-Online: A Russian AV company, Dr. Web, says it has conducted research to determine the spread of the Flashback trojan on systems running Mac OS X and says that 550,000 systems are infected, mostly in the US and Canada. A later update raised that number to 600,000 and claimed 274 infected systems in Cupertino, California. Dr. Web says it employed a sinkhole technique to intercept the bot installed by the newest Flashback trojan, and directed the bots to its own servers where it could analyse the traffic. Each bot includes a unique ID of the machine it has infected in the query string it sends to the command and control server; it is these unique IDs that Dr. Web has used to calculate the infection count. According to its estimates, of the original 550,000 estimate, 56.6% of the systems were in the United States, 19.8% in Canada, 12.8% in the United Kingdom and 6.1% in Australia. ...

The H-Online: Google has announced updates to the Stable and Beta channels of their Chrome browser, fixing several bugs and twelve security vulnerabilities. Seven of the twelve security fixes were classed as high-risk problems and Google paid a total of $6000 to the researchers who discovered the bugs. The update also includes a new version of the bundled Flash Player. Adobe have revised the Flash Player advisory from the end of March to include fixes for a Chrome/Flash only pair of memory corruption issues listed as CVE-2012-0724 and CVE-2012-0725. Given that these issues only affect Chrome and Chrome manages its own update, it is unlikely that Adobe will be reissuing or updating the advisory or patches for other browsers and platforms. ...