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[SECURITY] [DLA 426-1] libssh2 security update

Package        : libssh2
Version        : 1.2.6-1+deb6u2
CVE ID         : CVE-2016-0787

Andreas Schneider reported that libssh2, an SSH2 protocol
implementation used by many applications, did not generate
sufficiently long Diffie-Hellman secrets.

This vulnerability could be exploited by an eavesdropper to decrypt
and to intercept SSH sessions.

For the oldoldstable distribution (squeeze), this has been fixed in
version 1.2.6-1+deb6u2.  Although the changelog refers to 'sha256',
this version only supports DH SHA-1 key exchange and it is that key
exchange method that has been fixed.

For the oldstable (wheezy) and stable (jessie) distributions, this
will be fixed soon.

Ben Hutchings - Debian developer, member of Linux kernel and LTS teams

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