Re: [Tails-dev] LUKS 2 vulnerability

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Autor: gagz
Datum:  
To: hsiffish, tails-dev
Betreff: Re: [Tails-dev] LUKS 2 vulnerability
Hello,

hsiffish@???:
> ­Hi, does the new LUKS 2 vulnerability affect all previous and current version
> of Tails?
> Should we be concerned about the persistent storage feature?


If I understand correctly, no and no.
If I'm not mistaken, the vulnerability affects LUKS2 volumes created
using cryptsetup since version 2.2.0, but Tails ships 2.1.

But I might be wrong.

Furthermore, this attack is not doable without control of the storage
(ie, be root on a machine on which the storage is attached), and doesn't
allow for full decryption (but still up to few gigabytes).


This is sensitive topic so please double check what I'm saying!

gagz



> *CVE-2021-4122: cryptsetup 2.x: decryption through LUKS2 reencryption crash
> recovery*
> https://seclists.org/oss-sec/2022/q1/34
>
> Thanks in advance.
>
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