This security advisory came after two security researchers from the Netherlands, Carlo Meijer and Bernard van Gastel, issued a draft paper outlining vulnerabilities they discovered. Here is the abstract summarising the problem: If you have seen the paper, you can read about all the different vulnerabilities. I will concentrate on the two main ones.

SSD Hardware Encryption Security

Microsoft knew there was a problem with SSDs. So in cases of self-encrypted SSDs, Bitlocker would allow the encryption used by the SSDs to take over. Unfortunately, for Microsoft, this didn’t solve the problem. More from Meijer and van Gastel:

The vulnerability means that any attacker who can read the SEDs user manual, can access the master password. By getting access to the master password, attackers can bypass the user-generated password and access the data.

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Fix Master Password Vulnerabilities

In reality, this vulnerability would seem to be quite easy to fix. Firstly, the user can set their own master password, replacing the one generated by the SED vendor. This user-generated password would not then be accessible to an attacker. The other option would seem to be to set the Master Password Capability to ‘maximum’, thus disabling the master password altogether. Of course, the security advisory comes from the assumption that the average user believes that an SED would be safe from attackers, so why would anyone do either of these things.

User Passwords and Disc Encryption Keys

Another vulnerability is that there is no cryptographic binding between the user password and the disc encryption key (DEK) used to encrypt the password. In other words, someone could look inside the SED chip to find the values of the DEK and then use those values to steal the local data. In this case, the attacker would not require the user password to get access to the data.

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Not All SSDs May Be Affected

However, I would like to point out two things. Firstly, Meijer and van Gastel only tested a fraction of all SSDs. Do the research of your SSD and see if it may have a problem. Here are the SSDs the two researchers did test:

Attackers Need Local Access

Also note that this needs local access to the SSD as attackers need to access and manipulate the firmware. This means that your SSD and the data it holds is, theoretically, safe. Having said that, I don’t mean that this situation should be treated lightly. I will leave the last word to Meijer and van Gastel, Wise words indeed. Have you discovered an unlisted SSD that has the same security issue? Let us know in the comments below. RELATED POSTS TO CHECK OUT:

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