Microsoft Wireless Desktop 2000 Insufficent Verification / Mouse Spoofing

Credit: SySS
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-345

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Advisory ID: SYSS-2016-059 Product: Microsoft Wireless Desktop 2000 Manufacturer: Microsoft Affected Version(s): Ver. A Tested Version(s): Ver. A Vulnerability Type: Insufficient Verification of Data Authenticity (CWE-345) Mouse Spoofing Attack Risk Level: Medium Solution Status: Open Manufacturer Notification: 2016-06-28 Solution Date: - Public Disclosure: 2016-07-29 CVE Reference: Not yet assigned Authors of Advisory: Matthias Deeg and Gerhard Klostermeier (SySS GmbH) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Overview: Microsoft Wireless Desktop 2000 is a wireless desktop set consisting of a mouse and a keyboard. The manufacturer describes the product as follows (see [1]): "This keyboard features Advanced Encryption Standard (AES) technology, which is designed to help protect your information by encrypting your keystrokes. Each keyboard is permanently paired with its receiver at the factory - no key information is ever shared over the air." Due to unencrypted and unauthenticated mouse data communication, the wireless desktop set Microsoft Wireless Desktop 2000 is prone to mouse spoofing attacks. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vulnerability Details: The SySS GmbH found out that the mouse of the wireless desktop set Microsoft Wireless Desktop 2000 is prone to spoofing attacks, as the mouse data communication is unencrypted and unauthenticated. An attacker can analyze the unencrypted mouse data packets of the 2.4 GHz radio communication sent by the mouse to the receiver (USB dongle) in order to learn the used protocol. By knowing the used mouse data protocol, it is possible to spoof mouse actions like mouse movements or mouse clicks by sending forged data packets. Thus, an attacker is able to remotely control the mouse pointer of a target system that is operated with the wireless desktop set Microsoft Wireless Desktop 2000. If the graphical user interface of the victim's system is unlocked, an attacker can for example send a list of mouse actions that start the virtual on-screen keyboard of the operating system and execute arbitrary commands in the context of the currently logged in user, for instance a download and execute attack vector. As the attacker may not have an unobstructed view to the target system's screen and may know the used operating system, the screen resolution, or the current mouse settings, this kind mouse spoofing attack is based on heuristics. But concerning an unlocked and unattended system, an attacker can simply try different attack vectors for different target system configurations sequentially. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Proof of Concept (PoC): The SySS GmbH could successfully perform mouse spoofing attacks against a target system operated with the wireless desktop set Microsoft Wireless Desktop 2000 using an in-house developed software tool in combination with the USB radio dongle Crazyradio PA (see [2]). ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Solution: The manufacturer Microsoft responded to the reported security issue that this behavior is by design and that there will be no security update. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclosure Timeline: 2016-06-28: Vulnerability reported to manufacturer 2016-06-28: Manufacturer acknowledges e-mail with SySS security advisory 2016-07-22: Statement from manufacturer concerning reported security issue 2016-07-29: Public release of the security advisory ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ References: [1] Product website for Microsoft Wireless Desktop 2000 [2] Product website for Crazyradio PA [3] SySS Security Advisory SYSS-2016-059 [4] SySS Responsible Disclosure Policy ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Credits: This security vulnerability was found by Matthias Deeg and Gerhard Klostermeier of the SySS GmbH. E-Mail: matthias.deeg (at) Public Key: Key fingerprint = D1F0 A035 F06C E675 CDB9 0514 D9A4 BF6A 34AD 4DAB E-Mail: gerhard.klostermeier (at) Public Key: Key fingerprint = 8A9E 75CC D510 4FF6 8DB5 CC30 3802 3AAB 573E B2E7 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclaimer: The information provided in this security advisory is provided "as is" and without warranty of any kind. Details of this security advisory may be updated in order to provide as accurate information as possible. The latest version of this security advisory is available on the SySS Web site. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Copyright: Creative Commons - Attribution (by) - Version 3.0 URL: -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCgAGBQJXmzkcAAoJENmkv2o0rU2rGccP/0SAO/VCPoEYcvjVE59xzv3R np/AlWiBrVxpXYlZanXeVsX/Te+MeueoQGirM9AdotP/4JWa9JIT6BeH0SX/VT7V oSUkVlr/KmHWb2iN0BAgj/szq8rMisvrXt2MOeH3no3OCL34vJH+bIZnuXp8Es51 sFFjynfVZ5Xk14IeQbtyoCPmlsgCNYdLNB2Xp7W8qpkGt5bHGu+GLgIbj6RunCCR Pblua+BBlyl/ipvFUPR6vAGgOqCotQpa4Oou9/OKgZlSd/LMYqyLV16cizZHAPxX Se2MYIJkzs+DErbsFzCkMsXAM2oUl3eSzdPrnXReW1Df58UGgrJEeG6MLOIDOvMH EgKOJd+zUbwsu//e+ZOr0rkKuO8TPFWZWc2YCbeEP+z2SGs/kujsp59PmxL43pER 8pLcPtOa27HNW+LChV0xZv67D219dQ+kaYXbJLulwTZhKCpG692cs88hpHah0QQB rjsqT0Q1uxmRtdr80WXbJPjkwsKbZ/eOqKxcl/Pdw1RwwfdqLjGBdyAZQs8/aska WU7m+4CUGgB9Az2wOLzn6BjRgjTsGhEskcSdQBv4BcL5DgygCTE5zBWtb5fsJgd0 T4wajMW031H5XOWQlZwNluuswIzaomXusG4mQlOZIDCXBOH1lqpTT0lGviqqxAnT F0sDbPUzt6R/+hwb6Flh =1fVa -----END PGP SIGNATURE-----

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