** Changed in: fprintd
       Status: New => Fix Released

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  Found storing user fingerprints without encryption

Status in fprintd:
  Fix Released
Status in apparmor package in Ubuntu:
  Won't Fix
Status in fprintd package in Ubuntu:
Status in Debian:

Bug description:
  Dear all,

  I would like to report a new issue as follows.
  ‘fprintd’ saves a fingerprint data, ISO/IEC 19794-2 formatted, to a file on 
the host without any encryption.
  Though fprintd generates fingerprint image with root permission for 
protecting the file from attackers, it is not of itself sufficient.
  It is well known threat model that a formatted fingerprint data can be 
restored to original image about a decade ago.
  [1-4] are presented to create sophisticated and natural-looking fingerprints 
only from the numerical template data format as defined in ISO/IEC 19794-2.
  They also successfully evaluated these approaches against a number of 
undisclosed state-of-the-art algorithms and the NIST Fingerprint Image Software.

  We need improvements of those issues.

  [1] R. Cappelli et al., “Fingerprint Image Reconstruction from Standard 
Templates”, IEEE Trans. on Pattern Analysis and Machine Intelligence, vol.29, 
no.9, pp.1489-1503, 2007.
  [2] A. Ross et al., “From template to image: Reconstructing fingerprints from 
minutiae points”, IEEE Trans on Pattern Analysis and Machine Intelligence, 
vol.29, no.4, pp.544-560, 2007.
  [3] R. Cappelli et al., “Can Fingerprints be reconstructed from ISO 
Templates?”, IEEE ICARCV 2006.
  [4] J. Feng et al., “Fingerprint Reconstruction: From Minutiae to Phase”, 
IEEE Trans on Pattern Analysis and Machine Intelligence, vol.33, no.2, 
pp.209-223, 2011.

  Seong-Joong Kim

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