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{"acknowledgement": "Red Hat would like to thank Aris Adamantiadis for reporting this issue.", "affected_release": [{"advisory": "RHSA-2016:0566", "cpe": "cpe:/a:redhat:rhel_extras_other:7", "package": "libssh-0:0.7.1-2.el7", "product_name": "Red Hat Enterprise Linux 7 Extras", "release_date": "2016-03-31T00:00:00Z"}], "bugzilla": {"description": "libssh: bits/bytes confusion resulting in truncated Difffie-Hellman secret length", "id": "1305971", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1305971"}, "csaw": false, "cvss": {"cvss_base_score": "5.8", "cvss_scoring_vector": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "status": "verified"}, "cwe": "CWE-704", "details": ["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.\"", "A type confusion issue was found in the way libssh generated ephemeral secrets for the diffie-hellman-group1 and diffie-hellman-group14 key exchange methods. This would cause an SSHv2 Diffie-Hellman handshake to use significantly less secure random parameters."], "name": "CVE-2016-0739", "public_date": "2016-02-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-0739\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-0739\nhttps://www.libssh.org/security/advisories/CVE-2016-0739.txt"], "threat_severity": "Moderate", "upstream_fix": "libssh 0.7.3"}