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Bug#856211: anna: please implement SHA256 verification of .udeb files



Source: anna
Version: 1.57
Severity: grave
Tags: security
X-Debbugs-Cc: security@debian.org
User: debian-release@lists.debian.org
Usertags: bsp-2017-02-de-Berlin
Control: block -1 by 856210

Hi,

To date, anna still only implements MD5 verification of .udeb files,
despite its formal deprecation as a digital signature algorithm by
RFC6151 (2011) and recommendations of academic literature years prior.

The files are typically downloaded via insecure HTTP transport, so the
checksum verification is critical for the security of the installed
system.  stretch is expected to be a supported release until 2022.  So
I'm tentatively filing this bug as RC-severity.

Further context and an overview of related bugs will be published at:
https://wiki.debian.org/InstallerDebacle

Thanks,
Regards,
-- 
Steven Chamberlain
steven@pyro.eu.org

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