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Microsoft Drops Chinese Vendor After Windows Exploit Leak

Microsoft cuts Chinese firewall company Hangzhou DPTech Technologies from Microsoft Active Protections Program (MAPP) for its role in disclosure of Windows Remote Desktop (RDP) flaw.

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Microsoft today announced that it had rooted out the source of a leak from within its third-party security software firm partnership program that resulted in the weaponization of a bug in Windows--raising questions about whether the Microsoft Active Protections Program (MAPP) could be vulnerable to other such breaches.

Chinese firewall and IPS vendor Hangzhou DPTech Technologies, according to Microsoft, was the culprit behind a rapid-fire turnaround of a working exploit for the Windows Remote Desktop (RDP) flaw in mid-March, just after the bug was patched by Microsoft. Microsoft said that Patch Tuesday had warned of possible attacks emerging quickly for the "critical" vulnerability because an attacker would be able to reverse-engineer its new patch for the RDP bug in relatively short order. That raised the potential for exploits to be written for a targeted attack or for automatic-propagation worms that would let attacks quickly take over systems within corporate networks for botnets. RDP is a tool used by IT departments to handle help desk issues and by administrators to manage virtualized machines.

But just two days after Microsoft released the patch, there were reports that a working exploit for MS12-020 had been seen in China, indicating something was awry and that there could have been a leak from within MAPP. There was even a bounty of $1,500 circulating for the first person to build a Metasploit module for the bug.

Speculation of who leaked the vulnerability and proof-of-concept information on the RDP bug ranged from Italian researcher Luigi Auriemma, who originally discovered the flaw in 2011, to HP's Zero Day Initiative (ZDI), which purchased the bug from Auriemma in August 2011. Auriemma denied any involvement, and Aaron Portnoy, manager of security research at HP's ZDI, said in March that ZDI was "100% confident that the leaked information regarding MS12-020 did not come from the Zero Day Initiative."

[Microsoft Active Protections Program to include vulnerability information sharing from Adobe. See Microsoft, Adobe Collaborate To Protect Against Online Threats.]

Microsoft on Wednesday was mum on how it ultimately rooted out DPTech as the source of the leak, or on just what Hangzhou DPTech Technologies did. "During our investigation into the disclosure of confidential data shared with our Microsoft Active Protections Program (MAPP) partners, we determined that a member of the MAPP program, Hangzhou DPTech Technologies Co., Ltd., had breached our non-disclosure agreement (NDA). Microsoft takes breaches of our NDAs very seriously and has removed this partner from the MAPP Program," said Yunsun Wee, director or Microsoft Trustworthy Computing, in a statement.

Read the rest of this article on Dark Reading.

Put an end to insider theft and accidental data disclosure with network and host controls--and don't forget to keep employees on their toes. Also in the new, all-digital Stop Data Leaks issue of Dark Reading: Why security must be everyone's concern, and lessons learned from the Global Payments breach. (Free registration required.)

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