bouncycastle - security update

Tibor Jager, JĂśrg Schwenk, and Juraj Somorovsky, from Horst GĂśrtz
Institute for IT Security, published a paper in ESORICS 2015 where they
describe an invalid curve attack in Bouncy Castle Crypto, a Java library
for cryptography. An attacker is able to recover private Elliptic Curve
keys from different applications, for example, TLS servers.

More information:

http://web-in-security.blogspot.ca/2015/09/practical-invalid-curve-attacks.html

Practical Invalid Curve Attacks on TLS-ECDH:

http://euklid.org/pdf/ECC_Invalid_Curve.pdf

For the oldstable distribution (wheezy), this problem has been fixed
in version 1.44+dfsg-3.1+deb7u1.

For the stable distribution (jessie), this problem has been fixed in
version 1.49+dfsg-3+deb8u1.

For the unstable distribution (sid), this problem has been fixed in
version 1.51-2.

We recommend that you upgrade your bouncycastle packages.