Harald Jenny uploaded new packages for openswan which fixed the
following security problems:
CVE-2011-4073
Use-after-free vulnerability in the cryptographic helper handler
functionality in Openswan 2.3.0 through 2.6.36 allows remote
authenticated users to cause a denial of service (pluto IKE daemon
crash) via vectors related to the (1) quick_outI1_continue and (2)
quick_outI1 functions.
For the lenny-backports distribution the problems have been fixed in
version 1:2.6.28+dfsg-5+squeeze1~bpo50+1.
For the oldstable distribution (lenny), this problem has been fixed in
version 1:2.4.12+dfsg-1.3+lenny3.
For the stable distribution (squeeze), this problem has been fixed in
version 1:2.6.28+dfsg-5+squeeze1.
For the unstable distribution (sid), this problem has been fixed in
version 1:2.6.37-1.
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