Several unauthorised SSL certificates have been found in the wild issued
for the DigiNotar Certificate Authority, obtained through a security
compromise with said company. Debian, like other software distributors,
has as a precaution decided to disable the DigiNotar Root CA by default
in the NSS crypto libraries.
As a result from further understanding of the incident, this update to
DSA 2300 disables additional DigiNotar issuing certificates.
For the lenny-backports distribution the problems have been fixed in
version 3.12.8-1+squeeze3~bpo50+1.
For the squeeze-backports distribution the problems have been fixed in
version 3.12.11-3~bpo60+1.
For the oldstable distribution (lenny), this problem has been fixed in
version 3.12.3.1-0lenny6.
For the stable distribution (squeeze), this problem has been fixed in
version 3.12.8-1+squeeze3.
For the unstable distribution (sid), this problem has been fixed in
version 3.12.11-3.
We recommend that you upgrade your nss packages.
Upgrade instructions
--------------------
If you don't use pinning (see [1]) you have to update the package
manually via "apt-get -t lenny-backports install <packagelist>" with
the packagelist of your installed packages affected by this update.
[1] <https://backports.debian.org/Instructions>
We recommend to pin (in /etc/apt/preferences) the backports repository
to 200 so that new versions of installed backports will be installed
automatically.
Package: *
Pin: release a=lenny-backports
Pin-Priority: 200