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modzero Security: keylogger in HP audio driver

[EN] Keylogger in Hewlett-Packard Audio Driver
Security reviews of modern Windows Active Domain infrastructures are – from our point of view – quite sobering. Therefore, we often look left and right, when, for example, examining the hardening of protection mechanisms of a workstation. Here, we often find all sorts of dangerous and ill-conceived stuff. We want to present one of these casually identified cases now, as it’s quite an interesting one: We have discovered a keylogger in an audio driver package by Hewlett-Packard. A keylogger is a piece of software for which the case of dual-use can rarely be claimed. This means there are very few situations where you would describe a keylogger that records all keystrokes as ‘well-intended’. A keylogger records when a key is pressed, when it is released, and whether any shift or special keys have been pressed. It is also recorded if, for example, a password is entered even if it is not displayed on the screen.[…]There is no evidence that this keylogger has been intentionally implemented. Obviously, it is a negligence of the developers – which makes the software no less harmful. If the developer would just disable all logging, using debug-logs only in the development environment, there wouldn’t be problems with the confidentiality of the data of any user[…]

https://www.modzero.ch/modlog/archives/2017/05/11/en_keylogger_in_hewlett-packard_audio_driver/index.html

https://www.modzero.ch/advisories/MZ-17-01-Conexant-Keylogger.txt

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