Microsoft has confirmed that Windows XP Service Pack 3 (SP3) omits a critical security update issued by the company in November 2006.
The company acknowledged the omission while attempting to clarify the impact XP SP3 has on existing installations of Flash Player, an add-on that Microsoft bundled with Windows XP when it first shipped in 2001. Microsoft has patched Flash Player in the past using Windows Update, notably with the security update MS06-069 it issued on November 14, 2006.
MS06-069, the absent update, patched five vulnerabilities in Adobe's Flash Player, and was rated 'critical' by Microsoft, the company's highest threat ranking.
Microsoft did not explain why the patch is missing from the service pack, which it has billed as including "all previously released updates".
Flash Player has made security news of late; last week, for example, researchers revealed that hackers were actively exploiting Flash Player 220.127.116.11, an edition released by Adobe in December 2007. On Monday, it was revealed that Windows XP SP3 shipped with that out-of-date and vulnerable version, rather than the newer and more secure Flash Player 18.104.22.168, which Adobe issued in early April, about two weeks before Microsoft wrapped up the service pack and began distributing it to OEMs.
At the time, Microsoft declined to answer questions about XP SP3 and Flash, including why it wasn't able to add the newest version to XP SP3 and what advice it would give users.
On Tuesday, however, a Microsoft spokeswoman issued a clarification, saying that XP SP3 "does not ship any version of Flash in the Windows XP Service Pack 3 update that customers use to update existing SP2 machines. Any statement that Microsoft installs any versions of Flash Player with Windows XP SP3 is inaccurate".
Instead, the spokeswoman said XP SP3 has a hands-off approach to Flash; it does not disturb whatever version of the popular internet multimedia software that the user has installed. If, for instance, users have upgraded to Flash Player 22.214.171.124 themselves, then that is the version that remains on the PC after the XP SP3 update.
The same goes for users who had earlier applied the MS06-069 patch, which updated Flash to version 126.96.36.199 in late 2006, but who have not refreshed Flash since then. "The Windows XP SP3 update has no impact on systems where customers have applied MS06-069, which has been available to XP users on [Windows Update/Automatic Updates] since November 2006," she said.
That hands-off attitude also extends to new installations of XP SP3. In fact, said Microsoft's spokeswoman, new PCs assembled with the latest service pack don't touch the original 2001 version of Flash 6 bundled with the OS when it debuted. "A new system built using a copy of Windows XP with SP3 integrated will install the original Flash 6 that shipped with Windows XP gold and will need MS06-069 installed from Windows Update," she said.