The following updates has been released for Debian:

[DLA 190-1] libgcrypt11 security update
[DLA 191-1] checkpw security update
[DSA 3217-1] dpkg security update

[DLA 190-1] libgcrypt11 security update

Package : libgcrypt11
Version : 1.4.5-2+squeeze3
CVE ID : CVE-2014-3591 CVE-2015-0837

Multiple vulnerabilities were discovered in libgcrypt:

CVE-2014-3591

The Elgamal decryption routine was susceptible to a side-channel
attack discovered by researchers of Tel Aviv University. Ciphertext
blinding was enabled to counteract it. Note that this may have a
quite noticeable impact on Elgamal decryption performance.

CVE-2015-0837

The modular exponentiation routine mpi_powm() was susceptible to a
side-channel attack caused by data-dependent timing variations when
accessing its internal pre-computed table.

[DLA 191-1] checkpw security update

Package : checkpw
Version : 1.02-1+deb6u1
CVE ID : CVE-2015-0885

Hiroya Ito of GMO Pepabo, Inc. reported that checkpw, a password
authentication program, has a flaw in processing account names which
contain double dashes. A remote attacker can use this flaw to cause a
denial of service (infinite loop).

Thanks to Markus Koschany who prepared the Debian package.

[DSA 3217-1] dpkg security update

- -------------------------------------------------------------------------
Debian Security Advisory DSA-3217-1 security@debian.org
http://www.debian.org/security/ Salvatore Bonaccorso
April 09, 2015 http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : dpkg
CVE ID : CVE-2015-0840

Jann Horn discovered that the source package integrity verification in
dpkg-source can be bypassed via a specially crafted Debian source
control file (.dsc). Note that this flaw only affects extraction of
local Debian source packages via dpkg-source but not the installation of
packages from the Debian archive.

For the stable distribution (wheezy), this problem has been fixed in
version 1.16.16. This update also includes non-security changes
previously scheduled for the next wheezy point release. See the Debian
changelog for details.

For the unstable distribution (sid), this problem has been fixed in
version 1.17.25.

We recommend that you upgrade your dpkg packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/