Scientific Linux Security Update : libssh2 on SL6.x, SL7.x i386/x86_64

Medium Nessus Plugin ID 89863


The remote Scientific Linux host is missing one or more security updates.


A type confusion issue was found in the way libssh2 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. (CVE-2016-0787)

After installing these updated packages, all running applications using libssh2 must be restarted for this update to take effect.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 89863

File Name: sl_20160310_libssh2_on_SL6_x.nasl

Version: $Revision: 2.3 $

Type: local

Agent: unix

Published: 2016/03/11

Modified: 2016/10/19

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N


Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 2016/03/10

Reference Information

CVE: CVE-2016-0787