IT administrators who have yet to install an Internet Explorer (IE) patch released in February may want to move it up the priority list. Attackers have access to exploit code for one of the flaws the patch addressed.
Websense Security Labs has reported on its Web site Monday that "full exploit code" has been published for the flawed ADODB.Connection ActiveX control in Microsoft Data Access Components (MDAC). Attackers could exploit the flaw, which Microsoft patched in its Feb. 13 MS07-009 bulletin, to hijack targeted machines.
"Our scanners are now actively searching for any live sites that are attempting to exploit this vulnerability," Websense said in its advisory. "This type of vulnerability has been very popular with malicious attacks in the past and we expect to see its usage increase substantially now that exploit code is publicly available."
The flaw was originally brought to light by Metasploit Framework creator HD Moore during his Month of Browser Bugs project last July.
"The original demonstration of this vulnerability occurred on July 29, 2006 in HD Moore's Month of Browser Bugs #29," Websense Security Labs said. "At the time, only a denial-of-service demonstration was published."
The faulty ActiveX control at the heart of the flaw is used in Windows 2000 Service Pack 4, Windows XP Service Pack 2, Windows Server 2003 and Windows Server 2003 for Itanium-based Systems.
The patch can be downloaded from the Microsoft Web site.