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From: William Roberts <bill.c.roberts@gmail.com>
To: linux-integrity@vger.kernel.org
Subject: Question on permissions of runtime and bios measurements files
Date: Thu, 5 May 2022 08:59:35 -0500	[thread overview]
Message-ID: <CAFftDdrGYV=VwNPjypoOs1SmpNeZMTfrAFhht=zVOgC0hDrHSA@mail.gmail.com> (raw)

Currently the tss command line tools can't access the system
measurement logs for users even if they are in the group tss:

crw-rw---- 1 tss root 10, 224 Mai  3 17:22 /dev/tpm0
-r--r----- 1 root root 0 Mai  3 17:22
/sys/kernel/security/ima/binary_runtime_measurements
-r--r----- 1 root root 0 Mai  3 17:22
/sys/kernel/security/tpm0/binary_bios_measurements

So with tss2_quote, a quote can be computed but not the pcrLog for the
system PCRs.
The problem could be solved if the log files would be owned by tss.
But that could create privacy issues because the pcrLog would e.g.
contain executables in user home directories.
Do you have any suggestions how the problem could be addressed?

Thanks,
Bill

             reply	other threads:[~2022-05-05 13:59 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-05 13:59 William Roberts [this message]
2022-05-19 21:01 ` Question on permissions of runtime and bios measurements files Ken Goldman

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