Microsoft is lining up nine patches - two critical - as part of the April edition of its regular Patch Tuesday update cycle.
The nine bulletins due on 9 April affect all versions of Windows, some Office and Server components as well as Windows Defender on Windows 8 and RT.
The first of the two critical updates covers all versions of Internet Explorer (IE), including the newest IE 10 on Windows 8 and RT. The vulnerabilities covered create a means to run so-called drive-by download attacks that squirt malware at surfers with unpatched systems who happen across hacker-manipulated (often mainstream) websites.
Appearances are that the flaws to be addressed relate to IE bugs uncovered in the recent Pwn2Own competition at CanSecWest, but this remains unconfirmed.
The second critical vulnerability affects most versions of Windows, except for Microsoft's newest software - specifically Windows 8, Server 2012 and Windows RT (the tablet version).
The remaining seven bulletins are all rated “important” and affect Windows, the Sharepoint server, and Windows Defender on Windows 8 and Windows RT. The privilege elevation flaw in Redmond's anti-malware technology clearly stands out from the crowd. "Windows Defender isn’t something that has seen a lot of attention from researchers but would definitely be a juicy target of attackers," said Ziv Mador, director of security research at Trustwave.
Paul Henry, security and forensic analyst at Lumension, added: "Windows Defender is an important security component for the new operating systems, so it’s a little concerning to see it impacted here, even if only at an 'important' rather than critical level. If you’re running either of those systems, I would patch this important bulletin first."
In other patching news, Oracle has scheduled an extra release for Java this month, outside of its normal four-month release cycle release cycle. The additional release is due to appear on 16 April. ®