Debian: DSA-1627-2 Critical: OpenSC Programming Flaw in Smart Cards

With this bug anyone can change a user PIN without having the PIN or PUK
or the superusers PIN or PUK. However it can not be used to figure out the
PIN. If the PIN on your card is still the same you always had, there's a
reasonable chance that this vulnerability has not been exploited.

This vulnerability affects only smart cards and USB crypto tokens based on
Siemens CardOS M4, and within that group only those that were initialised
with OpenSC. Users of other smart cards and USB crypto tokens, or cards
that have been initialised with some software other than OpenSC, are not
affected.

After upgrading the package, running
pkcs15-tool -T
will show you whether the card is fine or vulnerable. If the card is
vulnerable, you need to update the security setting using:
pkcs15-tool -T -U

For the stable distribution (etch), this problem has been fixed in
version 0.11.1-2etch2.

For the unstable distribution (sid), this problem has been fixed in
version 0.11.4-5.

We recommend that ...