UBUNTU-CVE-2016-0739

libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."

References

Affected packages

Ubuntu:14.04:LTS / libssh

Package

Name: libssh
Purl: pkg:deb/ubuntu/libssh@0.6.1-0ubuntu3.3?arch=source&distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.6.1-0ubuntu3.3

Affected versions

0.*

0.5.4-1

0.6.1-0ubuntu2

0.6.1-0ubuntu3

0.6.1-0ubuntu3.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "0.6.1-0ubuntu3.3",
            "binary_name": "libssh-4"
        },
        {
            "binary_version": "0.6.1-0ubuntu3.3",
            "binary_name": "libssh-dev"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:16.04:LTS / libssh

Package

Name: libssh
Purl: pkg:deb/ubuntu/libssh@0.6.3-4.2ubuntu1?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.6.3-4.2ubuntu1

Affected versions

0.*

0.6.3-3ubuntu3

0.6.3-4.1

0.6.3-4.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "0.6.3-4.2ubuntu1",
            "binary_name": "libssh-4"
        },
        {
            "binary_version": "0.6.3-4.2ubuntu1",
            "binary_name": "libssh-dev"
        },
        {
            "binary_version": "0.6.3-4.2ubuntu1",
            "binary_name": "libssh-gcrypt-4"
        },
        {
            "binary_version": "0.6.3-4.2ubuntu1",
            "binary_name": "libssh-gcrypt-dev"
        }
    ],
    "availability": "No subscription required"
}